From 8795c992ced8d247af40def9f5045237f6c893c1 Mon Sep 17 00:00:00 2001
From: Viktor Hofer <viktor.hofer@microsoft.com>
Date: Fri, 1 Mar 2019 14:06:50 +0100
Subject: [PATCH 1/3] Remove license header from non-shipping files

---
 build.proj              | 1 -
 eng/Build.props         | 1 -
 eng/InternalTools.props | 1 -
 eng/Tools.props         | 1 -
 4 files changed, 4 deletions(-)

diff --git a/build.proj b/build.proj
index 5d73223448e1..3b0b184cab32 100644
--- a/build.proj
+++ b/build.proj
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
 <Project DefaultTargets="Build">
 
   <Import Project="Directory.Build.props" />
diff --git a/eng/Build.props b/eng/Build.props
index ca5f16c837ca..220f70514250 100644
--- a/eng/Build.props
+++ b/eng/Build.props
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
 <Project>
   <PropertyGroup>
     <RestoreUsingNuGetTargets>false</RestoreUsingNuGetTargets>
diff --git a/eng/InternalTools.props b/eng/InternalTools.props
index 19f5746b2b04..535feb10f6bb 100644
--- a/eng/InternalTools.props
+++ b/eng/InternalTools.props
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
 <Project>
   <Import Project="dependencies.props" />
 
diff --git a/eng/Tools.props b/eng/Tools.props
index a3131ecb6ed2..15b408b143c6 100644
--- a/eng/Tools.props
+++ b/eng/Tools.props
@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. See the LICENSE file in the project root for more information. -->
 <Project>
   <PropertyGroup>
     <RestoreSources Condition="'$(DotNetBuildOffline)' != 'true'">

From fed3dbe57f6d842f8dfc6e97ac271502af59ead0 Mon Sep 17 00:00:00 2001
From: Viktor Hofer <viktor.hofer@microsoft.com>
Date: Fri, 1 Mar 2019 14:12:04 +0100
Subject: [PATCH 2/3] Remove obsolete Project attributes

---
 Directory.Build.props                                         | 2 +-
 Directory.Build.targets                                       | 2 +-
 eng/DisableSourceControlManagement.targets                    | 2 +-
 eng/Packaging.props                                           | 2 +-
 eng/ReferenceAssemblies.props                                 | 2 +-
 eng/Resources.targets                                         | 2 +-
 eng/Versions.props                                            | 2 +-
 eng/codeOptimization.targets                                  | 2 +-
 eng/configurations/archgroups.props                           | 2 +-
 eng/configurations/configurationgroups.props                  | 2 +-
 eng/configurations/osgroups.props                             | 2 +-
 eng/configurations/properties.props                           | 2 +-
 eng/configurations/targetgroups.props                         | 2 +-
 eng/dependencies.props                                        | 2 +-
 eng/disableUap.targets                                        | 2 +-
 eng/illink.targets                                            | 2 +-
 eng/referenceFromRuntime.targets                              | 2 +-
 eng/versioning.targets                                        | 2 +-
 external/Directory.Build.props                                | 2 +-
 external/Directory.Build.targets                              | 2 +-
 external/ILLink/Configurations.props                          | 2 +-
 external/binplacePackages/Configurations.props                | 2 +-
 external/dir.proj                                             | 3 +--
 external/docs/Configurations.props                            | 2 +-
 external/harvestPackages/Configurations.props                 | 2 +-
 external/harvestPackages/harvestPackages.props                | 2 +-
 external/netcoreapp/Configurations.props                      | 2 +-
 external/netfx/Configurations.props                           | 2 +-
 external/netstandard/Configurations.props                     | 2 +-
 external/optimizationData/Configurations.props                | 2 +-
 external/runtime/Configurations.props                         | 2 +-
 external/runtime/Directory.Build.props                        | 2 +-
 external/test-runtime/Configurations.props                    | 2 +-
 external/tools/Configurations.props                           | 2 +-
 external/uap/Configurations.props                             | 2 +-
 external/winrt/Configurations.props                           | 2 +-
 pkg/Directory.Build.props                                     | 2 +-
 pkg/Directory.Build.targets                                   | 2 +-
 pkg/Microsoft.NETCore.Platforms.Future/Configurations.props   | 2 +-
 .../Microsoft.NETCore.Platforms.Future.pkgproj                | 2 +-
 pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props    | 2 +-
 pkg/Microsoft.NETCore.Platforms/Configurations.props          | 2 +-
 .../Microsoft.NETCore.Platforms.pkgproj                       | 2 +-
 pkg/Microsoft.NETCore.Platforms/runtimeGroups.props           | 2 +-
 pkg/Microsoft.NETCore.Targets/Configurations.props            | 2 +-
 .../Microsoft.NETCore.Targets.pkgproj                         | 2 +-
 pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props  | 2 +-
 .../Microsoft.Private.CoreFx.NETCoreApp.pkgproj               | 2 +-
 pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props | 2 +-
 pkg/Microsoft.Private.CoreFx.UAP/Configurations.props         | 2 +-
 .../Microsoft.Private.CoreFx.UAP.pkgproj                      | 2 +-
 pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props               | 2 +-
 .../Microsoft.Private.PackageBaseline.pkgproj                 | 2 +-
 .../Microsoft.Private.PackageBaseline.props                   | 2 +-
 .../Microsoft.Windows.Compatibility.Shims.pkgproj             | 2 +-
 .../Microsoft.Windows.Compatibility.pkgproj                   | 2 +-
 pkg/baseline/baseline.props                                   | 2 +-
 pkg/frameworkPackage.targets                                  | 2 +-
 pkg/runtime.native.System.IO.Ports/Configurations.props       | 2 +-
 pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props      | 2 +-
 .../runtime.native.System.IO.Ports.pkgproj                    | 2 +-
 pkg/test/frameworkSettings/net/settings.targets               | 2 +-
 pkg/test/frameworkSettings/netcoreapp/settings.targets        | 2 +-
 pkg/test/frameworkSettings/netcoreapp1.0/settings.targets     | 2 +-
 pkg/test/frameworkSettings/netcoreapp1.1/settings.targets     | 2 +-
 pkg/test/frameworkSettings/netcoreapp2.0/settings.targets     | 2 +-
 pkg/test/frameworkSettings/netcoreapp3.0/settings.targets     | 2 +-
 pkg/test/frameworkSettings/netstandard/settings.targets       | 2 +-
 .../netcoreapp2.2/settings.targets                            | 2 +-
 .../netcoreapp3.0/settings.targets                            | 2 +-
 .../Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets  | 2 +-
 .../Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets  | 2 +-
 .../Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets  | 2 +-
 .../System.Buffers/netcoreapp1.0/workaroundDowngrade.targets  | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../workaroundMissingSystemMemory.targets                     | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 .../netcoreapp1.0/workaroundDowngrade.targets                 | 2 +-
 pkg/test/packageTest.targets                                  | 2 +-
 pkg/test/props/Directory.Build.props                          | 2 +-
 pkg/test/test.msbuild                                         | 2 +-
 pkg/test/testPackages.proj                                    | 2 +-
 .../src/CoreLib/System.Private.CoreLib.Shared.projitems       | 2 +-
 .../src/System/Security/Cryptography/Asn1/AsnXml.targets      | 2 +-
 src/Common/tests/Configurations.props                         | 2 +-
 src/Common/tests/Performance/Configurations.props             | 2 +-
 src/Common/tests/Performance/PerfRunner/Configurations.props  | 2 +-
 .../Diagnostics/RemoteExecutorConsoleApp/Configurations.props | 2 +-
 .../CoreFxNetCloudService/CoreFxNetCloudService.ccproj        | 2 +-
 .../CoreFxNetCloudService/WebServer/Configurations.props      | 2 +-
 .../Servers/CoreFxNetCloudService/WebServer/WebServer.csproj  | 2 +-
 .../tests/System/Xml/BaseLibManaged/Configurations.props      | 2 +-
 src/Common/tests/System/Xml/ModuleCore/Configurations.props   | 2 +-
 src/Common/tests/System/Xml/XmlCoreTest/Configurations.props  | 2 +-
 src/Common/tests/System/Xml/XmlDiff/Configurations.props      | 2 +-
 src/Common/tests/Tests.props                                  | 2 +-
 src/CoreFx.Private.TestUtilities/Directory.Build.props        | 2 +-
 .../pkg/CoreFx.Private.TestUtilities.pkgproj                  | 2 +-
 src/CoreFx.Private.TestUtilities/ref/Configurations.props     | 2 +-
 src/CoreFx.Private.TestUtilities/src/Configurations.props     | 2 +-
 src/CoreFx.Private.TestUtilities/tests/Configurations.props   | 2 +-
 src/Directory.Build.props                                     | 2 +-
 src/Microsoft.CSharp/Directory.Build.props                    | 2 +-
 src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj             | 2 +-
 src/Microsoft.CSharp/ref/Configurations.props                 | 2 +-
 src/Microsoft.CSharp/src/Configurations.props                 | 2 +-
 src/Microsoft.CSharp/tests/Configurations.props               | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/Microsoft.IO.Redist/Directory.Build.props                 | 2 +-
 src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj       | 2 +-
 src/Microsoft.IO.Redist/src/Configurations.props              | 2 +-
 src/Microsoft.VisualBasic.Core/ref/Configurations.props       | 2 +-
 src/Microsoft.VisualBasic.Core/src/Configurations.props       | 2 +-
 src/Microsoft.VisualBasic.Core/tests/Configurations.props     | 2 +-
 src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props  | 2 +-
 src/Microsoft.Win32.Primitives/Directory.Build.props          | 2 +-
 src/Microsoft.Win32.Primitives/ref/Configurations.props       | 2 +-
 src/Microsoft.Win32.Primitives/src/Configurations.props       | 2 +-
 src/Microsoft.Win32.Primitives/tests/Configurations.props     | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/Microsoft.Win32.Registry.AccessControl.pkgproj        | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/Microsoft.Win32.Registry/Directory.Build.props            | 2 +-
 .../pkg/Microsoft.Win32.Registry.pkgproj                      | 2 +-
 src/Microsoft.Win32.Registry/ref/Configurations.props         | 2 +-
 src/Microsoft.Win32.Registry/src/Configurations.props         | 2 +-
 src/Microsoft.Win32.Registry/tests/Configurations.props       | 2 +-
 src/Microsoft.Win32.SystemEvents/Directory.Build.props        | 2 +-
 .../pkg/Microsoft.Win32.SystemEvents.pkgproj                  | 2 +-
 src/Microsoft.Win32.SystemEvents/ref/Configurations.props     | 2 +-
 src/Microsoft.Win32.SystemEvents/src/Configurations.props     | 2 +-
 src/Microsoft.Win32.SystemEvents/tests/Configurations.props   | 2 +-
 src/Microsoft.XmlSerializer.Generator/Directory.Build.props   | 2 +-
 .../pkg/GenerateNupkgProps.targets                            | 4 ++--
 .../pkg/Microsoft.XmlSerializer.Generator.pkgproj             | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../src/GenerateThisAssemblyCs.targets                        | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/Native/native-binplace.proj                               | 2 +-
 src/Native/pkg/Directory.Build.props                          | 2 +-
 src/Native/pkg/Directory.Build.targets                        | 2 +-
 .../runtime.native.System.Data.SqlClient.sni.pkgproj          | 2 +-
 src/SharedFrameworkValidation/SharedFrameworkValidation.proj  | 2 +-
 src/System.AppContext/Directory.Build.props                   | 2 +-
 src/System.AppContext/ref/Configurations.props                | 2 +-
 src/System.AppContext/src/Configurations.props                | 2 +-
 src/System.AppContext/tests/Configurations.props              | 2 +-
 src/System.Buffers/Directory.Build.props                      | 2 +-
 src/System.Buffers/ref/Configurations.props                   | 2 +-
 src/System.Buffers/src/Configurations.props                   | 2 +-
 src/System.Buffers/tests/Configurations.props                 | 2 +-
 src/System.CodeDom/Directory.Build.props                      | 2 +-
 src/System.CodeDom/pkg/System.CodeDom.pkgproj                 | 2 +-
 src/System.CodeDom/ref/Configurations.props                   | 2 +-
 src/System.CodeDom/src/Configurations.props                   | 2 +-
 src/System.CodeDom/tests/Configurations.props                 | 2 +-
 src/System.Collections.Concurrent/Directory.Build.props       | 2 +-
 src/System.Collections.Concurrent/ref/Configurations.props    | 2 +-
 src/System.Collections.Concurrent/src/Configurations.props    | 2 +-
 src/System.Collections.Concurrent/tests/Configurations.props  | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Collections.Immutable/Directory.Build.props        | 2 +-
 .../pkg/System.Collections.Immutable.pkgproj                  | 2 +-
 src/System.Collections.Immutable/ref/Configurations.props     | 2 +-
 src/System.Collections.Immutable/src/Configurations.props     | 2 +-
 src/System.Collections.Immutable/tests/Configurations.props   | 2 +-
 src/System.Collections.NonGeneric/Directory.Build.props       | 2 +-
 src/System.Collections.NonGeneric/ref/Configurations.props    | 2 +-
 src/System.Collections.NonGeneric/src/Configurations.props    | 2 +-
 src/System.Collections.NonGeneric/tests/Configurations.props  | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Collections.Specialized/Directory.Build.props      | 2 +-
 src/System.Collections.Specialized/ref/Configurations.props   | 2 +-
 src/System.Collections.Specialized/src/Configurations.props   | 2 +-
 src/System.Collections.Specialized/tests/Configurations.props | 2 +-
 src/System.Collections/Directory.Build.props                  | 2 +-
 src/System.Collections/ref/Configurations.props               | 2 +-
 src/System.Collections/src/Configurations.props               | 2 +-
 src/System.Collections/tests/Configurations.props             | 2 +-
 src/System.Collections/tests/Performance/Configurations.props | 2 +-
 src/System.ComponentModel.Annotations/Directory.Build.props   | 2 +-
 .../pkg/System.ComponentModel.Annotations.pkgproj             | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../System.ComponentModel.Composition.Registration.pkgproj    | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.ComponentModel.Composition/Directory.Build.props   | 2 +-
 .../pkg/System.ComponentModel.Composition.pkgproj             | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Configurations.props                                      | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.ComponentModel.Primitives/Directory.Build.props    | 2 +-
 src/System.ComponentModel.Primitives/ref/Configurations.props | 2 +-
 src/System.ComponentModel.Primitives/src/Configurations.props | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.ComponentModel.TypeConverter/Directory.Build.props | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.ComponentModel/Directory.Build.props               | 2 +-
 src/System.ComponentModel/ref/Configurations.props            | 2 +-
 src/System.ComponentModel/src/Configurations.props            | 2 +-
 src/System.ComponentModel/tests/Configurations.props          | 2 +-
 src/System.Composition.AttributedModel/Directory.Build.props  | 2 +-
 .../pkg/System.Composition.AttributedModel.pkgproj            | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Composition.Convention/Directory.Build.props       | 2 +-
 .../pkg/System.Composition.Convention.pkgproj                 | 2 +-
 src/System.Composition.Convention/src/Configurations.props    | 2 +-
 src/System.Composition.Convention/tests/Configurations.props  | 2 +-
 src/System.Composition.Hosting/Directory.Build.props          | 2 +-
 .../pkg/System.Composition.Hosting.pkgproj                    | 2 +-
 src/System.Composition.Hosting/src/Configurations.props       | 2 +-
 src/System.Composition.Hosting/tests/Configurations.props     | 2 +-
 src/System.Composition.Runtime/Directory.Build.props          | 2 +-
 .../pkg/System.Composition.Runtime.pkgproj                    | 2 +-
 src/System.Composition.Runtime/src/Configurations.props       | 2 +-
 src/System.Composition.Runtime/tests/Configurations.props     | 2 +-
 src/System.Composition.TypedParts/Directory.Build.props       | 2 +-
 .../pkg/System.Composition.TypedParts.pkgproj                 | 2 +-
 src/System.Composition.TypedParts/src/Configurations.props    | 2 +-
 src/System.Composition.TypedParts/tests/Configurations.props  | 2 +-
 src/System.Composition/Directory.Build.props                  | 2 +-
 src/System.Composition/pkg/System.Composition.pkgproj         | 2 +-
 src/System.Composition/tests/Configurations.props             | 2 +-
 .../Configurations.props                                      | 2 +-
 src/System.Composition/tests/TestLibrary/Configurations.props | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.Configuration.ConfigurationManager.pkgproj     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Console/Directory.Build.props                      | 2 +-
 src/System.Console/ref/Configurations.props                   | 2 +-
 src/System.Console/src/Configurations.props                   | 2 +-
 src/System.Console/tests/Configurations.props                 | 2 +-
 src/System.Console/tests/Performance/Configurations.props     | 2 +-
 src/System.Data.Common/Directory.Build.props                  | 2 +-
 src/System.Data.Common/ref/Configurations.props               | 2 +-
 src/System.Data.Common/src/Configurations.props               | 2 +-
 src/System.Data.Common/tests/Configurations.props             | 2 +-
 src/System.Data.DataSetExtensions/Directory.Build.props       | 2 +-
 .../pkg/System.Data.DataSetExtensions.pkgproj                 | 2 +-
 src/System.Data.DataSetExtensions/ref/Configurations.props    | 2 +-
 src/System.Data.DataSetExtensions/src/Configurations.props    | 2 +-
 src/System.Data.DataSetExtensions/tests/Configurations.props  | 2 +-
 src/System.Data.Odbc/Directory.Build.props                    | 2 +-
 src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj             | 2 +-
 src/System.Data.Odbc/ref/Configurations.props                 | 2 +-
 src/System.Data.Odbc/src/Configurations.props                 | 2 +-
 src/System.Data.Odbc/tests/Configurations.props               | 2 +-
 src/System.Data.SqlClient/Directory.Build.props               | 2 +-
 src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj   | 2 +-
 src/System.Data.SqlClient/ref/Configurations.props            | 2 +-
 src/System.Data.SqlClient/src/Configurations.props            | 2 +-
 src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets  | 2 +-
 .../tests/FunctionalTests/Configurations.props                | 2 +-
 .../tests/ManualTests/Configurations.props                    | 2 +-
 .../ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props | 2 +-
 .../ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props  | 2 +-
 .../ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props  | 2 +-
 .../SQL/UdtTest/UDTs/Utf8String/Configurations.props          | 2 +-
 .../tests/StressTests/IMonitorLoader/Configurations.props     | 2 +-
 .../System.Data.SqlClient.Stress.Tests/Configurations.props   | 2 +-
 .../System.Data.StressFramework/Configurations.props          | 2 +-
 .../StressTests/System.Data.StressRunner/Configurations.props | 2 +-
 .../tests/Tools/TDS/TDS.EndPoint/Configurations.props         | 2 +-
 .../tests/Tools/TDS/TDS.Servers/Configurations.props          | 2 +-
 .../tests/Tools/TDS/TDS/Configurations.props                  | 2 +-
 src/System.Diagnostics.Contracts/Directory.Build.props        | 2 +-
 src/System.Diagnostics.Contracts/ref/Configurations.props     | 2 +-
 src/System.Diagnostics.Contracts/src/Configurations.props     | 2 +-
 src/System.Diagnostics.Contracts/tests/Configurations.props   | 2 +-
 src/System.Diagnostics.Debug/Directory.Build.props            | 2 +-
 src/System.Diagnostics.Debug/ref/Configurations.props         | 2 +-
 src/System.Diagnostics.Debug/src/Configurations.props         | 2 +-
 src/System.Diagnostics.Debug/tests/Configurations.props       | 2 +-
 src/System.Diagnostics.DiagnosticSource/Directory.Build.props | 2 +-
 .../pkg/System.Diagnostics.DiagnosticSource.pkgproj           | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Diagnostics.EventLog/Directory.Build.props         | 2 +-
 .../pkg/System.Diagnostics.EventLog.pkgproj                   | 2 +-
 src/System.Diagnostics.EventLog/ref/Configurations.props      | 2 +-
 src/System.Diagnostics.EventLog/src/Configurations.props      | 2 +-
 src/System.Diagnostics.EventLog/tests/Configurations.props    | 2 +-
 src/System.Diagnostics.FileVersionInfo/Directory.Build.props  | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/NativeConsoleApp/Configurations.props               | 2 +-
 .../tests/NativeConsoleApp/NativeConsoleApp.vcxproj           | 2 +-
 .../tests/NativeLibrary/Configurations.props                  | 2 +-
 .../tests/NativeLibrary/NativeLibrary.vcxproj                 | 2 +-
 .../tests/SecondNativeLibrary/Configurations.props            | 2 +-
 .../tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj     | 2 +-
 .../Configurations.props                                      | 2 +-
 .../Configurations.props                                      | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.Diagnostics.PerformanceCounter.pkgproj         | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Diagnostics.Process/Directory.Build.props          | 2 +-
 src/System.Diagnostics.Process/ref/Configurations.props       | 2 +-
 src/System.Diagnostics.Process/src/Configurations.props       | 2 +-
 src/System.Diagnostics.Process/tests/Configurations.props     | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Diagnostics.StackTrace/Directory.Build.props       | 2 +-
 src/System.Diagnostics.StackTrace/ref/Configurations.props    | 2 +-
 src/System.Diagnostics.StackTrace/src/Configurations.props    | 2 +-
 src/System.Diagnostics.StackTrace/tests/Configurations.props  | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Diagnostics.Tools/Directory.Build.props            | 2 +-
 src/System.Diagnostics.Tools/ref/Configurations.props         | 2 +-
 src/System.Diagnostics.Tools/src/Configurations.props         | 2 +-
 src/System.Diagnostics.Tools/tests/Configurations.props       | 2 +-
 src/System.Diagnostics.TraceSource/Directory.Build.props      | 2 +-
 src/System.Diagnostics.TraceSource/ref/Configurations.props   | 2 +-
 src/System.Diagnostics.TraceSource/src/Configurations.props   | 2 +-
 src/System.Diagnostics.TraceSource/tests/Configurations.props | 2 +-
 src/System.Diagnostics.Tracing/Directory.Build.props          | 2 +-
 src/System.Diagnostics.Tracing/ref/Configurations.props       | 2 +-
 src/System.Diagnostics.Tracing/src/Configurations.props       | 2 +-
 src/System.Diagnostics.Tracing/tests/Configurations.props     | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.DirectoryServices.AccountManagement.pkgproj    | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.DirectoryServices.Protocols/Directory.Build.props  | 2 +-
 .../pkg/System.DirectoryServices.Protocols.pkgproj            | 2 +-
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 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Runtime.Extensions/Directory.Build.props           | 2 +-
 src/System.Runtime.Extensions/ref/Configurations.props        | 2 +-
 src/System.Runtime.Extensions/src/Configurations.props        | 2 +-
 .../tests/AssemblyResolveTestApp/Configurations.props         | 2 +-
 src/System.Runtime.Extensions/tests/Configurations.props      | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 .../tests/TestApp/Configurations.props                        | 2 +-
 .../tests/TestAppOutsideOfTPA/Configurations.props            | 2 +-
 .../tests/VoidMainWithExitCodeApp/Configurations.props        | 2 +-
 src/System.Runtime.Handles/Directory.Build.props              | 2 +-
 src/System.Runtime.Handles/ref/Configurations.props           | 2 +-
 src/System.Runtime.Handles/src/Configurations.props           | 2 +-
 src/System.Runtime.Handles/tests/Configurations.props         | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Runtime.InteropServices/Directory.Build.props      | 2 +-
 src/System.Runtime.InteropServices/ref/Configurations.props   | 2 +-
 src/System.Runtime.InteropServices/src/Configurations.props   | 2 +-
 src/System.Runtime.InteropServices/tests/Configurations.props | 2 +-
 src/System.Runtime.Intrinsics/Directory.Build.props           | 2 +-
 src/System.Runtime.Intrinsics/ref/Configurations.props        | 2 +-
 src/System.Runtime.Intrinsics/src/Configurations.props        | 2 +-
 src/System.Runtime.Loader/Directory.Build.props               | 2 +-
 src/System.Runtime.Loader/ref/Configurations.props            | 2 +-
 src/System.Runtime.Loader/src/Configurations.props            | 2 +-
 src/System.Runtime.Loader/tests/Configurations.props          | 2 +-
 .../tests/DefaultContext/Configurations.props                 | 2 +-
 .../tests/RefEmitLoadContext/Configurations.props             | 2 +-
 .../System.Runtime.Loader.Noop.Assembly/Configurations.props  | 2 +-
 .../System.Runtime.Loader.Test.Assembly/Configurations.props  | 2 +-
 .../System.Runtime.Loader.Test.Assembly2/Configurations.props | 2 +-
 .../Configurations.props                                      | 2 +-
 src/System.Runtime.Numerics/Directory.Build.props             | 2 +-
 src/System.Runtime.Numerics/ref/Configurations.props          | 2 +-
 src/System.Runtime.Numerics/src/Configurations.props          | 2 +-
 src/System.Runtime.Numerics/tests/Configurations.props        | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Runtime.Serialization.Json/Directory.Build.props   | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 .../tests/ReflectionOnly/Configurations.props                 | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Runtime.Serialization.Xml/Directory.Build.props    | 2 +-
 src/System.Runtime.Serialization.Xml/ref/Configurations.props | 2 +-
 src/System.Runtime.Serialization.Xml/src/Configurations.props | 2 +-
 .../tests/Canonicalization/Configurations.props               | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 .../tests/ReflectionOnly/Configurations.props                 | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj         | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Runtime.WindowsRuntime/Directory.Build.props       | 2 +-
 .../pkg/System.Runtime.WindowsRuntime.pkgproj                 | 2 +-
 src/System.Runtime.WindowsRuntime/ref/Configurations.props    | 2 +-
 src/System.Runtime.WindowsRuntime/src/Configurations.props    | 2 +-
 src/System.Runtime.WindowsRuntime/tests/Configurations.props  | 2 +-
 src/System.Runtime/Directory.Build.props                      | 2 +-
 src/System.Runtime/ref/Configurations.props                   | 2 +-
 src/System.Runtime/src/Configurations.props                   | 2 +-
 src/System.Runtime/tests/Configurations.props                 | 2 +-
 src/System.Runtime/tests/Performance/Configurations.props     | 2 +-
 .../tests/TestCollectibleAssembly/Configurations.props        | 2 +-
 .../tests/TestLoadAssembly/Configurations.props               | 2 +-
 src/System.Runtime/tests/TestModule/Configurations.props      | 2 +-
 src/System.Security.AccessControl/Directory.Build.props       | 2 +-
 .../pkg/System.Security.AccessControl.pkgproj                 | 2 +-
 src/System.Security.AccessControl/ref/Configurations.props    | 2 +-
 src/System.Security.AccessControl/src/Configurations.props    | 2 +-
 src/System.Security.AccessControl/tests/Configurations.props  | 2 +-
 src/System.Security.Claims/Directory.Build.props              | 2 +-
 src/System.Security.Claims/ref/Configurations.props           | 2 +-
 src/System.Security.Claims/src/Configurations.props           | 2 +-
 src/System.Security.Claims/tests/Configurations.props         | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Cryptography.Cng/Directory.Build.props    | 2 +-
 .../pkg/System.Security.Cryptography.Cng.pkgproj              | 2 +-
 src/System.Security.Cryptography.Cng/ref/Configurations.props | 2 +-
 src/System.Security.Cryptography.Cng/src/Configurations.props | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Cryptography.Csp/Directory.Build.props    | 2 +-
 src/System.Security.Cryptography.Csp/ref/Configurations.props | 2 +-
 src/System.Security.Cryptography.Csp/src/Configurations.props | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.Security.Cryptography.OpenSsl.pkgproj          | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Cryptography.Pkcs/Directory.Build.props   | 2 +-
 .../pkg/System.Security.Cryptography.Pkcs.pkgproj             | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.Security.Cryptography.ProtectedData.pkgproj    | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Cryptography.Xml/Directory.Build.props    | 2 +-
 .../pkg/System.Security.Cryptography.Xml.pkgproj              | 2 +-
 src/System.Security.Cryptography.Xml/ref/Configurations.props | 2 +-
 src/System.Security.Cryptography.Xml/src/Configurations.props | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Permissions/Directory.Build.props         | 2 +-
 .../pkg/System.Security.Permissions.pkgproj                   | 2 +-
 src/System.Security.Permissions/ref/Configurations.props      | 2 +-
 src/System.Security.Permissions/src/Configurations.props      | 2 +-
 src/System.Security.Permissions/tests/Configurations.props    | 2 +-
 src/System.Security.Principal.Windows/Directory.Build.props   | 2 +-
 .../pkg/System.Security.Principal.Windows.pkgproj             | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Security.Principal/Directory.Build.props           | 2 +-
 src/System.Security.Principal/ref/Configurations.props        | 2 +-
 src/System.Security.Principal/src/Configurations.props        | 2 +-
 src/System.Security.SecureString/Directory.Build.props        | 2 +-
 src/System.Security.SecureString/ref/Configurations.props     | 2 +-
 src/System.Security.SecureString/src/Configurations.props     | 2 +-
 src/System.Security.SecureString/tests/Configurations.props   | 2 +-
 src/System.ServiceModel.Syndication/Directory.Build.props     | 2 +-
 .../pkg/System.ServiceModel.Syndication.pkgproj               | 2 +-
 src/System.ServiceModel.Syndication/ref/Configurations.props  | 2 +-
 src/System.ServiceModel.Syndication/src/Configurations.props  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Directory.Build.props                                     | 2 +-
 .../pkg/System.ServiceProcess.ServiceController.pkgproj       | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../Configurations.props                                      | 2 +-
 src/System.Text.Encoding.CodePages/Directory.Build.props      | 2 +-
 .../pkg/System.Text.Encoding.CodePages.pkgproj                | 2 +-
 src/System.Text.Encoding.CodePages/ref/Configurations.props   | 2 +-
 src/System.Text.Encoding.CodePages/src/Configurations.props   | 2 +-
 src/System.Text.Encoding.CodePages/tests/Configurations.props | 2 +-
 src/System.Text.Encoding.Extensions/Directory.Build.props     | 2 +-
 src/System.Text.Encoding.Extensions/ref/Configurations.props  | 2 +-
 src/System.Text.Encoding.Extensions/src/Configurations.props  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Text.Encoding/Directory.Build.props                | 2 +-
 src/System.Text.Encoding/ref/Configurations.props             | 2 +-
 src/System.Text.Encoding/src/Configurations.props             | 2 +-
 src/System.Text.Encoding/tests/Configurations.props           | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Text.Encodings.Web/Directory.Build.props           | 2 +-
 .../pkg/System.Text.Encodings.Web.pkgproj                     | 2 +-
 src/System.Text.Encodings.Web/src/Configurations.props        | 2 +-
 src/System.Text.Encodings.Web/tests/Configurations.props      | 2 +-
 src/System.Text.Json/Directory.Build.props                    | 2 +-
 src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj   | 2 +-
 src/System.Text.Json/ref/Configurations.props                 | 2 +-
 src/System.Text.Json/src/Configurations.props                 | 2 +-
 src/System.Text.Json/tests/Configurations.props               | 2 +-
 src/System.Text.RegularExpressions/Directory.Build.props      | 2 +-
 src/System.Text.RegularExpressions/ref/Configurations.props   | 2 +-
 src/System.Text.RegularExpressions/src/Configurations.props   | 2 +-
 src/System.Text.RegularExpressions/tests/Configurations.props | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Threading.AccessControl/Directory.Build.props      | 2 +-
 .../pkg/System.Threading.AccessControl.pkgproj                | 2 +-
 src/System.Threading.AccessControl/ref/Configurations.props   | 2 +-
 src/System.Threading.AccessControl/src/Configurations.props   | 2 +-
 src/System.Threading.AccessControl/tests/Configurations.props | 2 +-
 src/System.Threading.Channels/Directory.Build.props           | 2 +-
 .../pkg/System.Threading.Channels.pkgproj                     | 2 +-
 src/System.Threading.Channels/ref/Configurations.props        | 2 +-
 src/System.Threading.Channels/src/Configurations.props        | 2 +-
 src/System.Threading.Channels/tests/Configurations.props      | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Threading.Overlapped/Directory.Build.props         | 2 +-
 src/System.Threading.Overlapped/ref/Configurations.props      | 2 +-
 src/System.Threading.Overlapped/src/Configurations.props      | 2 +-
 src/System.Threading.Overlapped/tests/Configurations.props    | 2 +-
 src/System.Threading.Tasks.Dataflow/Directory.Build.props     | 2 +-
 .../pkg/System.Threading.Tasks.Dataflow.pkgproj               | 2 +-
 src/System.Threading.Tasks.Dataflow/ref/Configurations.props  | 2 +-
 src/System.Threading.Tasks.Dataflow/src/Configurations.props  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Threading.Tasks.Extensions/Directory.Build.props   | 2 +-
 .../ref/Configurations.props                                  | 2 +-
 .../src/Configurations.props                                  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 .../tests/Performance/Configurations.props                    | 2 +-
 src/System.Threading.Tasks.Parallel/Directory.Build.props     | 2 +-
 src/System.Threading.Tasks.Parallel/ref/Configurations.props  | 2 +-
 src/System.Threading.Tasks.Parallel/src/Configurations.props  | 2 +-
 .../tests/Configurations.props                                | 2 +-
 src/System.Threading.Tasks/Directory.Build.props              | 2 +-
 src/System.Threading.Tasks/ref/Configurations.props           | 2 +-
 src/System.Threading.Tasks/src/Configurations.props           | 2 +-
 src/System.Threading.Tasks/tests/Configurations.props         | 2 +-
 src/System.Threading.Thread/Directory.Build.props             | 2 +-
 src/System.Threading.Thread/ref/Configurations.props          | 2 +-
 src/System.Threading.Thread/src/Configurations.props          | 2 +-
 src/System.Threading.Thread/tests/Configurations.props        | 2 +-
 .../tests/DefaultApartmentStateMain/Configurations.props      | 2 +-
 .../tests/MTAMain/Configurations.props                        | 2 +-
 .../tests/STAMain/Configurations.props                        | 2 +-
 src/System.Threading.ThreadPool/Directory.Build.props         | 2 +-
 src/System.Threading.ThreadPool/ref/Configurations.props      | 2 +-
 src/System.Threading.ThreadPool/src/Configurations.props      | 2 +-
 src/System.Threading.ThreadPool/tests/Configurations.props    | 2 +-
 src/System.Threading.Timer/Directory.Build.props              | 2 +-
 src/System.Threading.Timer/ref/Configurations.props           | 2 +-
 src/System.Threading.Timer/src/Configurations.props           | 2 +-
 src/System.Threading.Timer/tests/Configurations.props         | 2 +-
 src/System.Threading/Directory.Build.props                    | 2 +-
 src/System.Threading/ref/Configurations.props                 | 2 +-
 src/System.Threading/src/Configurations.props                 | 2 +-
 src/System.Threading/tests/Configurations.props               | 2 +-
 src/System.Threading/tests/Performance/Configurations.props   | 2 +-
 src/System.Transactions.Local/Directory.Build.props           | 2 +-
 src/System.Transactions.Local/ref/Configurations.props        | 2 +-
 src/System.Transactions.Local/src/Configurations.props        | 2 +-
 src/System.Transactions.Local/tests/Configurations.props      | 2 +-
 src/System.ValueTuple/Directory.Build.props                   | 2 +-
 src/System.ValueTuple/ref/Configurations.props                | 2 +-
 src/System.ValueTuple/src/Configurations.props                | 2 +-
 src/System.ValueTuple/tests/Configurations.props              | 2 +-
 src/System.Web.HttpUtility/Directory.Build.props              | 2 +-
 src/System.Web.HttpUtility/ref/Configurations.props           | 2 +-
 src/System.Web.HttpUtility/src/Configurations.props           | 2 +-
 src/System.Web.HttpUtility/tests/Configurations.props         | 2 +-
 src/System.Windows.Extensions/Directory.Build.props           | 2 +-
 .../pkg/System.Windows.Extensions.pkgproj                     | 2 +-
 src/System.Windows.Extensions/ref/Configurations.props        | 2 +-
 .../ref/System.Windows.Extensions.csproj                      | 2 +-
 src/System.Windows.Extensions/src/Configurations.props        | 2 +-
 src/System.Windows.Extensions/tests/Configurations.props      | 2 +-
 .../tests/System.Windows.Extensions.Tests.csproj              | 2 +-
 src/System.Xml.ReaderWriter/Directory.Build.props             | 2 +-
 src/System.Xml.ReaderWriter/ref/Configurations.props          | 2 +-
 src/System.Xml.ReaderWriter/src/Configurations.props          | 2 +-
 src/System.Xml.XDocument/Directory.Build.props                | 2 +-
 src/System.Xml.XDocument/ref/Configurations.props             | 2 +-
 src/System.Xml.XDocument/src/Configurations.props             | 2 +-
 src/System.Xml.XPath.XDocument/Directory.Build.props          | 2 +-
 src/System.Xml.XPath.XDocument/ref/Configurations.props       | 2 +-
 src/System.Xml.XPath.XDocument/src/Configurations.props       | 2 +-
 src/System.Xml.XPath/Directory.Build.props                    | 2 +-
 src/System.Xml.XPath/ref/Configurations.props                 | 2 +-
 src/System.Xml.XPath/src/Configurations.props                 | 2 +-
 src/System.Xml.XmlDocument/Directory.Build.props              | 2 +-
 src/System.Xml.XmlDocument/ref/Configurations.props           | 2 +-
 src/System.Xml.XmlDocument/src/Configurations.props           | 2 +-
 src/System.Xml.XmlSerializer/Directory.Build.props            | 2 +-
 src/System.Xml.XmlSerializer/ref/Configurations.props         | 2 +-
 src/System.Xml.XmlSerializer/src/Configurations.props         | 2 +-
 src/mscorlib.WinRT-Facade/ref/Configurations.props            | 2 +-
 src/post.builds                                               | 2 +-
 src/pretest.builds                                            | 2 +-
 src/shims/ApiCompat.proj                                      | 2 +-
 src/shims/Directory.Build.props                               | 2 +-
 src/shims/manual/Directory.Build.props                        | 2 +-
 src/shims/netfxreference.props                                | 2 +-
 src/shims/shims.proj                                          | 2 +-
 1043 files changed, 1044 insertions(+), 1045 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index 78c982197295..cde9c9a48e12 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" TreatAsLocalProperty="ExcludeRestorePackageImports">
+<Project DefaultTargets="Build" TreatAsLocalProperty="ExcludeRestorePackageImports">
   <!-- Base repo layout properties -->
   <PropertyGroup>
     <RepoRoot>$(MSBuildThisFileDirectory)</RepoRoot>
diff --git a/Directory.Build.targets b/Directory.Build.targets
index 22b046a32c2d..3db99cfe39ef 100644
--- a/Directory.Build.targets
+++ b/Directory.Build.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 
   <PropertyGroup>
     <!--
diff --git a/eng/DisableSourceControlManagement.targets b/eng/DisableSourceControlManagement.targets
index 732b6766b929..16d88bac9fa2 100644
--- a/eng/DisableSourceControlManagement.targets
+++ b/eng/DisableSourceControlManagement.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0">
+<Project>
   <PropertyGroup>
     <EnableSourceControlManagerQueries>false</EnableSourceControlManagerQueries>
   </PropertyGroup>
diff --git a/eng/Packaging.props b/eng/Packaging.props
index bfd2e0ed92eb..65d9f593eb4a 100644
--- a/eng/Packaging.props
+++ b/eng/Packaging.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageDescriptionFile>$(RepoRoot)pkg/descriptions.json</PackageDescriptionFile>
     <PackageLicenseFile>$(RepoRoot)LICENSE.TXT</PackageLicenseFile>
diff --git a/eng/ReferenceAssemblies.props b/eng/ReferenceAssemblies.props
index a7c05d461c78..cc8d589442c5 100644
--- a/eng/ReferenceAssemblies.props
+++ b/eng/ReferenceAssemblies.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <IsReferenceAssembly Condition="'$(IsReferenceAssembly)'=='' AND ($(MSBuildProjectFullPath.Contains('\ref\')) OR $(MSBuildProjectFullPath.Contains('/ref/')))">true</IsReferenceAssembly>
 
diff --git a/eng/Resources.targets b/eng/Resources.targets
index 297d028e11db..600ec422bd4b 100644
--- a/eng/Resources.targets
+++ b/eng/Resources.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <ResourcesSourceFileExtension Condition="'$(MSBuildProjectExtension)' == '.csproj'">.cs</ResourcesSourceFileExtension>
     <ResourcesSourceFileExtension Condition="'$(MSBuildProjectExtension)' == '.vbproj'">.vb</ResourcesSourceFileExtension>
diff --git a/eng/Versions.props b/eng/Versions.props
index eaebf14b1473..0cfc137635a5 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0">
+<Project>
   <PropertyGroup>
     <!-- The .NET Core product branding version -->
     <ProductVersion>3.0.0</ProductVersion>
diff --git a/eng/codeOptimization.targets b/eng/codeOptimization.targets
index 39bb002af4fd..1e09fde2b4f2 100644
--- a/eng/codeOptimization.targets
+++ b/eng/codeOptimization.targets
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
 
   <PropertyGroup Condition="'$(ApplyPartialNgenOptimization)' == ''">
      <ApplyPartialNgenOptimization Condition="'$(IsReferenceAssembly)' == 'true'">false</ApplyPartialNgenOptimization>
diff --git a/eng/configurations/archgroups.props b/eng/configurations/archgroups.props
index ea31c0470795..ec71889840db 100644
--- a/eng/configurations/archgroups.props
+++ b/eng/configurations/archgroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <ArchGroups Include="x86" />
     <ArchGroups Include="x64" />
diff --git a/eng/configurations/configurationgroups.props b/eng/configurations/configurationgroups.props
index 882c3586860f..9b1a9f24ebf0 100644
--- a/eng/configurations/configurationgroups.props
+++ b/eng/configurations/configurationgroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <ConfigurationGroups Include="Debug" />
     <ConfigurationGroups Include="Release" />
diff --git a/eng/configurations/osgroups.props b/eng/configurations/osgroups.props
index 55afc3c359dd..ab25123edf5c 100644
--- a/eng/configurations/osgroups.props
+++ b/eng/configurations/osgroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <OSGroups Include="Windows_NT">
       <Imports>AnyOS</Imports>
diff --git a/eng/configurations/properties.props b/eng/configurations/properties.props
index 50cb3708e1a7..7cd77df99594 100644
--- a/eng/configurations/properties.props
+++ b/eng/configurations/properties.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="osgroups.props"/>
   <Import Project="targetgroups.props"/>
   <Import Project="configurationgroups.props"/>
diff --git a/eng/configurations/targetgroups.props b/eng/configurations/targetgroups.props
index 946a7babd46a..6e5589438fd3 100644
--- a/eng/configurations/targetgroups.props
+++ b/eng/configurations/targetgroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <TargetGroups Include="netcore50">
       <TargetFramework>netcore50</TargetFramework>
diff --git a/eng/dependencies.props b/eng/dependencies.props
index 25f9a57afa43..818f02c5dd85 100644
--- a/eng/dependencies.props
+++ b/eng/dependencies.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <!-- Source of truth for dependency tooling: the commit hash of the dotnet/versions master branch as of the last auto-upgrade. -->
 
   <!-- For detailed explanation of the reference versions see:
diff --git a/eng/disableUap.targets b/eng/disableUap.targets
index 1a2e0d8e44c9..34b067da396e 100644
--- a/eng/disableUap.targets
+++ b/eng/disableUap.targets
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Target Name="RemoveUapvNextContent"
           Condition="'$(KeepUAPContent)' != 'true'"
           DependsOnTargets="GetPackageReport"
diff --git a/eng/illink.targets b/eng/illink.targets
index cc9d02d63345..207a1a2588e2 100644
--- a/eng/illink.targets
+++ b/eng/illink.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <TargetsTriggeredByCompilation Condition="'$(DesignTimeBuild)' != 'true'">
       $(TargetsTriggeredByCompilation);
diff --git a/eng/referenceFromRuntime.targets b/eng/referenceFromRuntime.targets
index 2df3af10faef..c538fed1fccb 100644
--- a/eng/referenceFromRuntime.targets
+++ b/eng/referenceFromRuntime.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Target Name="AddReferenceFromRuntimeForTests"
           AfterTargets="ResolveAssemblyReferences"
           Condition="'$(IsTestProject)'=='true' AND '@(ReferenceFromRuntime)' != ''">
diff --git a/eng/versioning.targets b/eng/versioning.targets
index a95906c9e67c..ec0ceab21c07 100644
--- a/eng/versioning.targets
+++ b/eng/versioning.targets
@@ -1,4 +1,4 @@
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <GenerateAssemblyInfo Condition="'$(GenerateAssemblyInfo)'==''">true</GenerateAssemblyInfo>
   </PropertyGroup>
diff --git a/external/Directory.Build.props b/external/Directory.Build.props
index 9564ed9195f1..675d77c3276f 100644
--- a/external/Directory.Build.props
+++ b/external/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <ContainsPackageReferences>true</ContainsPackageReferences>
diff --git a/external/Directory.Build.targets b/external/Directory.Build.targets
index 7c9bff7f39c3..791d6eac981d 100644
--- a/external/Directory.Build.targets
+++ b/external/Directory.Build.targets
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.targets" />
 
   <PropertyGroup>
diff --git a/external/ILLink/Configurations.props b/external/ILLink/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/external/ILLink/Configurations.props
+++ b/external/ILLink/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/binplacePackages/Configurations.props b/external/binplacePackages/Configurations.props
index d6c6c395fd67..61206a2a9b0c 100644
--- a/external/binplacePackages/Configurations.props
+++ b/external/binplacePackages/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       net461;
diff --git a/external/dir.proj b/external/dir.proj
index a1b57acf120d..fccddc9f626d 100644
--- a/external/dir.proj
+++ b/external/dir.proj
@@ -1,6 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
+  <Import Project="../Directory.Build.props" />
 
   <PropertyGroup>
     <AdditionalBuildConfigurations>$(AdditionalBuildConfigurations);netstandard-$(OSGroup)-$(ConfigurationGroup)-$(ArchGroup)</AdditionalBuildConfigurations>
diff --git a/external/docs/Configurations.props b/external/docs/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/external/docs/Configurations.props
+++ b/external/docs/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/harvestPackages/Configurations.props b/external/harvestPackages/Configurations.props
index 1a5940dc0b12..7ab520885354 100644
--- a/external/harvestPackages/Configurations.props
+++ b/external/harvestPackages/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       package;
diff --git a/external/harvestPackages/harvestPackages.props b/external/harvestPackages/harvestPackages.props
index a0d11ae15e1e..4b088b2258d0 100644
--- a/external/harvestPackages/harvestPackages.props
+++ b/external/harvestPackages/harvestPackages.props
@@ -1,4 +1,4 @@
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 <!-- The versions can be updated by running UpdateToLatestStablePackages target in harvestPackages.depproj -->
 <ItemGroup>
 <PackageReference Include="Microsoft.CSharp">
diff --git a/external/netcoreapp/Configurations.props b/external/netcoreapp/Configurations.props
index e08fdd895561..f84dae58a32f 100644
--- a/external/netcoreapp/Configurations.props
+++ b/external/netcoreapp/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp2.0;
diff --git a/external/netfx/Configurations.props b/external/netfx/Configurations.props
index 93e6478e90f3..273f0b1d7b28 100644
--- a/external/netfx/Configurations.props
+++ b/external/netfx/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- Include netcoreapp since we need to generate facades between desktop and netcoreapp -->
     <BuildConfigurations>
diff --git a/external/netstandard/Configurations.props b/external/netstandard/Configurations.props
index 2e14c5a1f6fb..c9a0ea8704f1 100644
--- a/external/netstandard/Configurations.props
+++ b/external/netstandard/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.0;
diff --git a/external/optimizationData/Configurations.props b/external/optimizationData/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/external/optimizationData/Configurations.props
+++ b/external/optimizationData/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/runtime/Configurations.props b/external/runtime/Configurations.props
index 63b40fdf83be..9263470de952 100644
--- a/external/runtime/Configurations.props
+++ b/external/runtime/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/external/runtime/Directory.Build.props b/external/runtime/Directory.Build.props
index 8e5eba7c8f9f..7def185643f6 100644
--- a/external/runtime/Directory.Build.props
+++ b/external/runtime/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <OutDirName>external.$(MSBuildProjectName)</OutDirName>
   </PropertyGroup>
diff --git a/external/test-runtime/Configurations.props b/external/test-runtime/Configurations.props
index 3b11f75e394c..d9438571e663 100644
--- a/external/test-runtime/Configurations.props
+++ b/external/test-runtime/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/external/tools/Configurations.props b/external/tools/Configurations.props
index 733538b06451..2ef91cefebf3 100644
--- a/external/tools/Configurations.props
+++ b/external/tools/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/external/uap/Configurations.props b/external/uap/Configurations.props
index 128839ca24ea..02a0681c00de 100644
--- a/external/uap/Configurations.props
+++ b/external/uap/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap10.0.16299;
diff --git a/external/winrt/Configurations.props b/external/winrt/Configurations.props
index 04ff7ea9b291..eefe8864b972 100644
--- a/external/winrt/Configurations.props
+++ b/external/winrt/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/pkg/Directory.Build.props b/pkg/Directory.Build.props
index 19e61cb1b230..a0cc683705e4 100644
--- a/pkg/Directory.Build.props
+++ b/pkg/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="..\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/pkg/Directory.Build.targets b/pkg/Directory.Build.targets
index 6d1a6448f6c4..4d51514c464c 100644
--- a/pkg/Directory.Build.targets
+++ b/pkg/Directory.Build.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 
   <Import Condition="'$(IsFrameworkPackage)' == 'true'" Project="frameworkPackage.targets" />
 
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props b/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
+++ b/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
index 322a73f48897..7f138ed4175b 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
+++ b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>3.0.0</PackageVersion>
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props b/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
index b8004431907d..ef64c73c34f8 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
+++ b/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <RuntimeGroup Include="unix">
       <Architectures>wasm</Architectures>
diff --git a/pkg/Microsoft.NETCore.Platforms/Configurations.props b/pkg/Microsoft.NETCore.Platforms/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/pkg/Microsoft.NETCore.Platforms/Configurations.props
+++ b/pkg/Microsoft.NETCore.Platforms/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
index 3c6f865e98b0..6829b6b21c52 100644
--- a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
+++ b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>$(PlatformPackageVersion)</PackageVersion>
diff --git a/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props b/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
index 737c04e8f6c1..3331f3a7ad6a 100644
--- a/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
+++ b/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <RuntimeGroup Include="unix">
       <Parent>any</Parent>
diff --git a/pkg/Microsoft.NETCore.Targets/Configurations.props b/pkg/Microsoft.NETCore.Targets/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/pkg/Microsoft.NETCore.Targets/Configurations.props
+++ b/pkg/Microsoft.NETCore.Targets/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
index 160edff0a2de..753aff49c8bc 100644
--- a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
+++ b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>3.0.0</PackageVersion>
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
index 20b9b955999d..894b4b2357a0 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
index af2e21750780..fb15c944ca58 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props b/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
index 63aedae5b984..5ad3f72e5d97 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <ItemGroup>
     <OfficialBuildRID Include="freebsd-x64" />
     <OfficialBuildRID Include="linux-arm">
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props b/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
index 173e6387810e..2d43e728c4a8 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
+++ b/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
index 7bb0aba11cbd..9583723fb7d9 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
+++ b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>4.7.0</PackageVersion>
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props b/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
index 1bccba4a0bf6..dd44bb00e3c1 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
+++ b/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <ItemGroup>
     <OfficialBuildRID Include="win10-x86">
       <Platform>x86</Platform>
diff --git a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
index 07e5707e6901..bc3a5af9346c 100644
--- a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
+++ b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <HarvestStablePackage>false</HarvestStablePackage>
diff --git a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.props b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.props
index 8f293788749c..02801dc54334 100644
--- a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.props
+++ b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <PackageIndex Include="$(MSBuildThisFileDirectory)packageIndex.json" />
   </ItemGroup>
diff --git a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
index 5180f375d109..882774d3da25 100644
--- a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
+++ b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
index 8b0e4e24e2bb..e3d0b53d0673 100644
--- a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
+++ b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
       <!-- We use the PackageVersion property defined in Packaging.props for the Prerelease packages which are using it to be built -->
diff --git a/pkg/baseline/baseline.props b/pkg/baseline/baseline.props
index d5e93dbfd5ae..a496dfa4dc84 100644
--- a/pkg/baseline/baseline.props
+++ b/pkg/baseline/baseline.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="..\Microsoft.Private.PackageBaseline\Microsoft.Private.PackageBaseline.props" />
 
   <PropertyGroup>
diff --git a/pkg/frameworkPackage.targets b/pkg/frameworkPackage.targets
index 97771e270ec2..a58cb47d1749 100644
--- a/pkg/frameworkPackage.targets
+++ b/pkg/frameworkPackage.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" InitialTargets="_CheckForFiles;IncludeFiles;SetValidateFramework" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project InitialTargets="_CheckForFiles;IncludeFiles;SetValidateFramework">
 
   <PropertyGroup>
     <IsLineupPackage Condition="'$(PackageTargetRuntime)' == '' AND '$(IncludeLibFiles)' != 'true'">true</IsLineupPackage>
diff --git a/pkg/runtime.native.System.IO.Ports/Configurations.props b/pkg/runtime.native.System.IO.Ports/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/pkg/runtime.native.System.IO.Ports/Configurations.props
+++ b/pkg/runtime.native.System.IO.Ports/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props b/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
index db3a2c187a52..60d2f971d231 100644
--- a/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
+++ b/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <ItemGroup>
     <BuildRID Include="linux-arm">
       <Platform>arm</Platform>
diff --git a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
index c3880689f215..ff53b07f0bcd 100644
--- a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
+++ b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <SkipPackageFileCheck>true</SkipPackageFileCheck>
diff --git a/pkg/test/frameworkSettings/net/settings.targets b/pkg/test/frameworkSettings/net/settings.targets
index a92c2e225cef..c86bd2718f0a 100644
--- a/pkg/test/frameworkSettings/net/settings.targets
+++ b/pkg/test/frameworkSettings/net/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- Desktop has cycles and dangling refs -->
     <!-- ShouldVerifyClosure>true</ShouldVerifyClosure -->
diff --git a/pkg/test/frameworkSettings/netcoreapp/settings.targets b/pkg/test/frameworkSettings/netcoreapp/settings.targets
index 409d2364709e..8986eba9606a 100644
--- a/pkg/test/frameworkSettings/netcoreapp/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="$(ToolsDir)netfxreference.props" />
 
   <PropertyGroup>
diff --git a/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
index a13a2c419f5f..be848aefc2c1 100644
--- a/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <IgnoredTypes Include="System.Collections.StructuralComparisons" />
     <IgnoredTypes Include="System.Threading.WaitHandleExtensions" />
diff --git a/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets b/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
index 6a72b9252663..7aa64a3dea29 100644
--- a/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <IgnoredTypes Include="System.Collections.StructuralComparisons" />
     <IgnoredTypes Include="System.Threading.WaitHandleExtensions" />
diff --git a/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
index e36a61bdac9e..8aa000e2c976 100644
--- a/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <!-- NETCoreApp2.0 had experimental versions of Span and ReadOnlySpan 
          which we don't match the final API nor were they ship-quality -->
diff --git a/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
index c201b38104d6..4bbce61895ee 100644
--- a/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- Enable targeting netcoreapp3.0 even in an older CLI -->
     <NETCoreAppMaximumVersion>3.0</NETCoreAppMaximumVersion>
diff --git a/pkg/test/frameworkSettings/netstandard/settings.targets b/pkg/test/frameworkSettings/netstandard/settings.targets
index 82663d56141e..68305493f2e5 100644
--- a/pkg/test/frameworkSettings/netstandard/settings.targets
+++ b/pkg/test/frameworkSettings/netstandard/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <Import Project="$(ToolsDir)netfxreference.props" />
 
   <PropertyGroup>
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
index 03d8b5871707..7bf46da54d9a 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
          version than locally built packages. Validation will assume incorrectly that you are downgrading the reference which is why this error is flagged.
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
index 03d8b5871707..7bf46da54d9a 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
          version than locally built packages. Validation will assume incorrectly that you are downgrading the reference which is why this error is flagged.
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
index 3056cd46cdf7..c79977c94ac9 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- This package intentionally drops all runtime-package mappings from runtime.json -->
     <ShouldVerifyClosure>false</ShouldVerifyClosure>
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
index 3056cd46cdf7..c79977c94ac9 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- This package intentionally drops all runtime-package mappings from runtime.json -->
     <ShouldVerifyClosure>false</ShouldVerifyClosure>
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
index 03d8b5871707..7bf46da54d9a 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
          version than locally built packages. Validation will assume incorrectly that you are downgrading the reference which is why this error is flagged.
diff --git a/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
index 4a9c853567cd..989e43508676 100644
--- a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
+++ b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
@@ -4,7 +4,7 @@
      should be available so that System.Memory does not reference NetStandard1.X)
      See Eric St John for details. -->
 
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup Condition="$(TargetFramework.StartsWith('netstandard1.')) OR $(TargetFramework.StartsWith('netcoreapp1.'))">
     <PackageReference Include="System.Memory" Version="4.5.1" />
   </ItemGroup>
diff --git a/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
index b678d357ccf5..b3275ae56359 100644
--- a/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="runtime.native.System.IO.Ports" Version="0.0.0" NoWarn="NU1605" />
diff --git a/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
index 1ec61540e47a..9792feb31f8c 100644
--- a/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
     <PackageReference Include="NETStandard.Library" Version="1.6.1" />
diff --git a/pkg/test/packageTest.targets b/pkg/test/packageTest.targets
index df40c5b022dc..49df79b9a7ab 100644
--- a/pkg/test/packageTest.targets
+++ b/pkg/test/packageTest.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
 
   <PropertyGroup>
     <_targetFrameworkVersionIndex>$(TargetFramework.IndexOfAny(".-0123456789"))</_targetFrameworkVersionIndex>
diff --git a/pkg/test/props/Directory.Build.props b/pkg/test/props/Directory.Build.props
index d77113e4a87f..558a68d5a58f 100644
--- a/pkg/test/props/Directory.Build.props
+++ b/pkg/test/props/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <ImportDirectoryBuildTargets>false</ImportDirectoryBuildTargets>
   </PropertyGroup>
diff --git a/pkg/test/test.msbuild b/pkg/test/test.msbuild
index aa3cb05f3784..800922198fb9 100644
--- a/pkg/test/test.msbuild
+++ b/pkg/test/test.msbuild
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Restore;Test" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Restore;Test">
   <ItemGroup>
     <TestPackages Condition="'$(TestPackages)' != ''" Include="$(TestPackages)" />
   </ItemGroup>
diff --git a/pkg/test/testPackages.proj b/pkg/test/testPackages.proj
index 067ddea48ce1..71eebd57419a 100644
--- a/pkg/test/testPackages.proj
+++ b/pkg/test/testPackages.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <ItemGroup>
diff --git a/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems b/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
index e0bf112a7280..088b3b6f20e1 100644
--- a/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
+++ b/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>
diff --git a/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets b/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
index d6774f2da363..63d2480561ab 100644
--- a/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
+++ b/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
@@ -1,4 +1,4 @@
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <AsnXml />
   </PropertyGroup>
diff --git a/src/Common/tests/Configurations.props b/src/Common/tests/Configurations.props
index 17d3231f8e68..20e7ab532f10 100644
--- a/src/Common/tests/Configurations.props
+++ b/src/Common/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/Common/tests/Performance/Configurations.props b/src/Common/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/Performance/Configurations.props
+++ b/src/Common/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/Performance/PerfRunner/Configurations.props b/src/Common/tests/Performance/PerfRunner/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/Performance/PerfRunner/Configurations.props
+++ b/src/Common/tests/Performance/PerfRunner/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props b/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
+++ b/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
index 43eab917c66a..0f5fd332bfe0 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
index 7a6622ea8691..cf97a7ffab76 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       <!-- Setting BuildConfiguration to empty in order to skip the build of this project -->
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
index 8d4654d7d862..5f55ec1cebc1 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.1.0.0\build\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props" Condition="Exists('..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.1.0.0\build\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" />
   <Import Project="..\packages\Microsoft.Net.Compilers.1.0.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.1.0.0\build\Microsoft.Net.Compilers.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
diff --git a/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props b/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
+++ b/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/ModuleCore/Configurations.props b/src/Common/tests/System/Xml/ModuleCore/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/System/Xml/ModuleCore/Configurations.props
+++ b/src/Common/tests/System/Xml/ModuleCore/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props b/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
+++ b/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/XmlDiff/Configurations.props b/src/Common/tests/System/Xml/XmlDiff/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Common/tests/System/Xml/XmlDiff/Configurations.props
+++ b/src/Common/tests/System/Xml/XmlDiff/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/Tests.props b/src/Common/tests/Tests.props
index f704de238633..02daf7528301 100644
--- a/src/Common/tests/Tests.props
+++ b/src/Common/tests/Tests.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <CommonPath>$(MSBuildThisFileDirectory)</CommonPath>
   </PropertyGroup>
diff --git a/src/CoreFx.Private.TestUtilities/Directory.Build.props b/src/CoreFx.Private.TestUtilities/Directory.Build.props
index de6d9bff47f3..974aa00ff4c5 100644
--- a/src/CoreFx.Private.TestUtilities/Directory.Build.props
+++ b/src/CoreFx.Private.TestUtilities/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>1.0.1.0</AssemblyVersion>
diff --git a/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj b/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
index 3749cb671996..136965d49c6a 100644
--- a/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
+++ b/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\CoreFx.Private.TestUtilities.csproj">
diff --git a/src/CoreFx.Private.TestUtilities/ref/Configurations.props b/src/CoreFx.Private.TestUtilities/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/CoreFx.Private.TestUtilities/ref/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/CoreFx.Private.TestUtilities/src/Configurations.props b/src/CoreFx.Private.TestUtilities/src/Configurations.props
index 6fcb3a2e8a65..8907aa12d5d3 100644
--- a/src/CoreFx.Private.TestUtilities/src/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/CoreFx.Private.TestUtilities/tests/Configurations.props b/src/CoreFx.Private.TestUtilities/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/CoreFx.Private.TestUtilities/tests/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 27717c18de39..5ecef089e9c0 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <EnableDefaultItems>false</EnableDefaultItems>
diff --git a/src/Microsoft.CSharp/Directory.Build.props b/src/Microsoft.CSharp/Directory.Build.props
index 472e418a974b..c1845f50ce13 100644
--- a/src/Microsoft.CSharp/Directory.Build.props
+++ b/src/Microsoft.CSharp/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj b/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
index 01f313e3cb18..620cf7c68093 100644
--- a/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
+++ b/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.CSharp.csproj">
diff --git a/src/Microsoft.CSharp/ref/Configurations.props b/src/Microsoft.CSharp/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Microsoft.CSharp/ref/Configurations.props
+++ b/src/Microsoft.CSharp/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.CSharp/src/Configurations.props b/src/Microsoft.CSharp/src/Configurations.props
index 77e29493b0ec..1bfc3dbdee70 100644
--- a/src/Microsoft.CSharp/src/Configurations.props
+++ b/src/Microsoft.CSharp/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.CSharp/tests/Configurations.props b/src/Microsoft.CSharp/tests/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/Microsoft.CSharp/tests/Configurations.props
+++ b/src/Microsoft.CSharp/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
index 8bd234dac146..abf2951770e1 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>2.1.0</PackageVersion>
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
index f13488f3158c..1319b1ce6bf3 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <ItemGroup>
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
index fbe03a38dc69..95a5449d6814 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       net461-Windows_NT;
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
index 064de9fd71eb..3ea059827001 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Microsoft.IO.Redist/Directory.Build.props b/src/Microsoft.IO.Redist/Directory.Build.props
index aee32419e302..62606e4d167b 100644
--- a/src/Microsoft.IO.Redist/Directory.Build.props
+++ b/src/Microsoft.IO.Redist/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj b/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
index c8c8882fc2f7..c6fb4d0bdb04 100644
--- a/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
+++ b/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\Microsoft.IO.Redist.csproj">
diff --git a/src/Microsoft.IO.Redist/src/Configurations.props b/src/Microsoft.IO.Redist/src/Configurations.props
index 4c28b0289393..9112d19431d1 100644
--- a/src/Microsoft.IO.Redist/src/Configurations.props
+++ b/src/Microsoft.IO.Redist/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Microsoft.VisualBasic.Core/ref/Configurations.props b/src/Microsoft.VisualBasic.Core/ref/Configurations.props
index 02721ef2a9b7..8fbfed8adee6 100644
--- a/src/Microsoft.VisualBasic.Core/ref/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/src/Configurations.props b/src/Microsoft.VisualBasic.Core/src/Configurations.props
index 2d71c1465591..8dceccd6a7a8 100644
--- a/src/Microsoft.VisualBasic.Core/src/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/tests/Configurations.props b/src/Microsoft.VisualBasic.Core/tests/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/Microsoft.VisualBasic.Core/tests/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props b/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.Win32.Primitives/Directory.Build.props b/src/Microsoft.Win32.Primitives/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/Microsoft.Win32.Primitives/Directory.Build.props
+++ b/src/Microsoft.Win32.Primitives/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Primitives/ref/Configurations.props b/src/Microsoft.Win32.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/Microsoft.Win32.Primitives/ref/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.Win32.Primitives/src/Configurations.props b/src/Microsoft.Win32.Primitives/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
--- a/src/Microsoft.Win32.Primitives/src/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/Microsoft.Win32.Primitives/tests/Configurations.props b/src/Microsoft.Win32.Primitives/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Microsoft.Win32.Primitives/tests/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props b/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
index afbc21511c0c..38448e58868c 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj b/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
index 2d8e3dbf318e..47492fa6bb1f 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
+++ b/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.Registry.AccessControl.csproj">
diff --git a/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
index 512a1e812f53..4f11d6b6ba32 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
index ff5b0bce1165..7147eef7a3f6 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
index 552f5e92bccd..1af4d0816e72 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry/Directory.Build.props b/src/Microsoft.Win32.Registry/Directory.Build.props
index 71e2cc39cb46..ff313e503168 100644
--- a/src/Microsoft.Win32.Registry/Directory.Build.props
+++ b/src/Microsoft.Win32.Registry/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj b/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
index 684d0f0c3fa5..95e031c2982a 100644
--- a/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
+++ b/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.Registry.csproj">
diff --git a/src/Microsoft.Win32.Registry/ref/Configurations.props b/src/Microsoft.Win32.Registry/ref/Configurations.props
index 6308641bd9aa..2a7570a4d9b5 100644
--- a/src/Microsoft.Win32.Registry/ref/Configurations.props
+++ b/src/Microsoft.Win32.Registry/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry/src/Configurations.props b/src/Microsoft.Win32.Registry/src/Configurations.props
index bb24b79ee245..abb6062ffae4 100644
--- a/src/Microsoft.Win32.Registry/src/Configurations.props
+++ b/src/Microsoft.Win32.Registry/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry/tests/Configurations.props b/src/Microsoft.Win32.Registry/tests/Configurations.props
index 03909885449b..899049fcb776 100644
--- a/src/Microsoft.Win32.Registry/tests/Configurations.props
+++ b/src/Microsoft.Win32.Registry/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.Win32.SystemEvents/Directory.Build.props b/src/Microsoft.Win32.SystemEvents/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/Microsoft.Win32.SystemEvents/Directory.Build.props
+++ b/src/Microsoft.Win32.SystemEvents/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj b/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
index b3259258fdaf..635999808755 100644
--- a/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
+++ b/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.SystemEvents.csproj">
diff --git a/src/Microsoft.Win32.SystemEvents/ref/Configurations.props b/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
index 6308641bd9aa..2a7570a4d9b5 100644
--- a/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.SystemEvents/src/Configurations.props b/src/Microsoft.Win32.SystemEvents/src/Configurations.props
index 22ece157ac14..fab86b2ccfac 100644
--- a/src/Microsoft.Win32.SystemEvents/src/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.SystemEvents/tests/Configurations.props b/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
index 03909885449b..899049fcb776 100644
--- a/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.XmlSerializer.Generator/Directory.Build.props b/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
index 22fe3759f521..0ae708cac855 100644
--- a/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
+++ b/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>2.1.0</PackageVersion>
diff --git a/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets b/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
index ce4649910de2..5e8e54cbc3dd 100644
--- a/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
+++ b/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <PropertyGroup>
       <BuildDependsOn>
         GenerateNupkgProps;
@@ -16,7 +16,7 @@
   <Target Name="GenerateNupkgProps" DependsOnTargets="CalculatePackageVersion">
     <PropertyGroup>
       <PropsFileContents>
-&lt;Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"&gt;
+&lt;Project DefaultTargets="Build"&gt;
   &lt;ItemGroup&gt;
     &lt;DotNetCliToolReference Include="$(Id)" Version="$(PackageVersion)" /&gt;
   &lt;/ItemGroup&gt;
diff --git a/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj b/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
index b10b6e00b7a7..d8e65d2edcc8 100644
--- a/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
+++ b/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\Microsoft.XmlSerializer.Generator.csproj" />
diff --git a/src/Microsoft.XmlSerializer.Generator/src/Configurations.props b/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
+++ b/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets b/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
index d994d6c71c12..310537677026 100644
--- a/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
+++ b/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <Compile Include="$(IntermediateOutputPath)\ThisAssembly.cs"/>
   </ItemGroup>
diff --git a/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props b/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
index 79f33d01ba89..4d4d801bc7b7 100644
--- a/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
+++ b/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Native/native-binplace.proj b/src/Native/native-binplace.proj
index b0b5e52aba19..b7deeceee93f 100644
--- a/src/Native/native-binplace.proj
+++ b/src/Native/native-binplace.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Native/pkg/Directory.Build.props b/src/Native/pkg/Directory.Build.props
index 3e623ece91d3..7515317c917b 100644
--- a/src/Native/pkg/Directory.Build.props
+++ b/src/Native/pkg/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\..\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/src/Native/pkg/Directory.Build.targets b/src/Native/pkg/Directory.Build.targets
index 2c22401f3810..412c4ac7a2d1 100644
--- a/src/Native/pkg/Directory.Build.targets
+++ b/src/Native/pkg/Directory.Build.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
 
   <!-- Add path globs specific to native binaries to exclude unnecessary files from packages. -->
   <Choose>
diff --git a/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj b/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
index a1ef7a072b40..909d433b2343 100644
--- a/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
+++ b/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <SkipPackageFileCheck>true</SkipPackageFileCheck>
diff --git a/src/SharedFrameworkValidation/SharedFrameworkValidation.proj b/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
index 7a506426a23f..da697391410e 100644
--- a/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
+++ b/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/src/System.AppContext/Directory.Build.props b/src/System.AppContext/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.AppContext/Directory.Build.props
+++ b/src/System.AppContext/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.AppContext/ref/Configurations.props b/src/System.AppContext/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.AppContext/ref/Configurations.props
+++ b/src/System.AppContext/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.AppContext/src/Configurations.props b/src/System.AppContext/src/Configurations.props
index afd7b401c08b..cab746f97ba8 100644
--- a/src/System.AppContext/src/Configurations.props
+++ b/src/System.AppContext/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.AppContext/tests/Configurations.props b/src/System.AppContext/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.AppContext/tests/Configurations.props
+++ b/src/System.AppContext/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Buffers/Directory.Build.props b/src/System.Buffers/Directory.Build.props
index c5a1d5d47bbc..54212ae92a33 100644
--- a/src/System.Buffers/Directory.Build.props
+++ b/src/System.Buffers/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Buffers/ref/Configurations.props b/src/System.Buffers/ref/Configurations.props
index 30b6227d79b0..bc2a72ba6a1a 100644
--- a/src/System.Buffers/ref/Configurations.props
+++ b/src/System.Buffers/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Buffers/src/Configurations.props b/src/System.Buffers/src/Configurations.props
index afd7b401c08b..cab746f97ba8 100644
--- a/src/System.Buffers/src/Configurations.props
+++ b/src/System.Buffers/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Buffers/tests/Configurations.props b/src/System.Buffers/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Buffers/tests/Configurations.props
+++ b/src/System.Buffers/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.CodeDom/Directory.Build.props b/src/System.CodeDom/Directory.Build.props
index 6a43eb658bfc..fb0aa67477c5 100644
--- a/src/System.CodeDom/Directory.Build.props
+++ b/src/System.CodeDom/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.CodeDom/pkg/System.CodeDom.pkgproj b/src/System.CodeDom/pkg/System.CodeDom.pkgproj
index 2f99fd4fcb15..3b75cc06f75c 100644
--- a/src/System.CodeDom/pkg/System.CodeDom.pkgproj
+++ b/src/System.CodeDom/pkg/System.CodeDom.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.CodeDom.csproj">
diff --git a/src/System.CodeDom/ref/Configurations.props b/src/System.CodeDom/ref/Configurations.props
index 48c33849d7c4..2fa00762c2f0 100644
--- a/src/System.CodeDom/ref/Configurations.props
+++ b/src/System.CodeDom/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       net461;
diff --git a/src/System.CodeDom/src/Configurations.props b/src/System.CodeDom/src/Configurations.props
index 48c33849d7c4..2fa00762c2f0 100644
--- a/src/System.CodeDom/src/Configurations.props
+++ b/src/System.CodeDom/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       net461;
diff --git a/src/System.CodeDom/tests/Configurations.props b/src/System.CodeDom/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.CodeDom/tests/Configurations.props
+++ b/src/System.CodeDom/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Collections.Concurrent/Directory.Build.props b/src/System.Collections.Concurrent/Directory.Build.props
index de4517a5a8fb..a2fa3bc188f2 100644
--- a/src/System.Collections.Concurrent/Directory.Build.props
+++ b/src/System.Collections.Concurrent/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.14.0</AssemblyVersion>
diff --git a/src/System.Collections.Concurrent/ref/Configurations.props b/src/System.Collections.Concurrent/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Collections.Concurrent/ref/Configurations.props
+++ b/src/System.Collections.Concurrent/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.Concurrent/src/Configurations.props b/src/System.Collections.Concurrent/src/Configurations.props
index a5054eeed391..ef6e1be3142c 100644
--- a/src/System.Collections.Concurrent/src/Configurations.props
+++ b/src/System.Collections.Concurrent/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Collections.Concurrent/tests/Configurations.props b/src/System.Collections.Concurrent/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Collections.Concurrent/tests/Configurations.props
+++ b/src/System.Collections.Concurrent/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Collections.Concurrent/tests/Performance/Configurations.props b/src/System.Collections.Concurrent/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Collections.Concurrent/tests/Performance/Configurations.props
+++ b/src/System.Collections.Concurrent/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Collections.Immutable/Directory.Build.props b/src/System.Collections.Immutable/Directory.Build.props
index 3cd18cc250ce..5ea645887bc8 100644
--- a/src/System.Collections.Immutable/Directory.Build.props
+++ b/src/System.Collections.Immutable/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>1.6.0</PackageVersion>
diff --git a/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj b/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
index 54a2b54778f3..28b233c41720 100644
--- a/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
+++ b/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <!-- we need to be supported on pre-nuget-3 platforms (Dev12, Dev11, etc) -->
diff --git a/src/System.Collections.Immutable/ref/Configurations.props b/src/System.Collections.Immutable/ref/Configurations.props
index 048bc45cf40d..5cc4ed8860bf 100644
--- a/src/System.Collections.Immutable/ref/Configurations.props
+++ b/src/System.Collections.Immutable/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.Immutable/src/Configurations.props b/src/System.Collections.Immutable/src/Configurations.props
index 048bc45cf40d..5cc4ed8860bf 100644
--- a/src/System.Collections.Immutable/src/Configurations.props
+++ b/src/System.Collections.Immutable/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.Immutable/tests/Configurations.props b/src/System.Collections.Immutable/tests/Configurations.props
index eb4a540a928f..95f2aee4ed8c 100644
--- a/src/System.Collections.Immutable/tests/Configurations.props
+++ b/src/System.Collections.Immutable/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Collections.NonGeneric/Directory.Build.props b/src/System.Collections.NonGeneric/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Collections.NonGeneric/Directory.Build.props
+++ b/src/System.Collections.NonGeneric/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections.NonGeneric/ref/Configurations.props b/src/System.Collections.NonGeneric/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Collections.NonGeneric/ref/Configurations.props
+++ b/src/System.Collections.NonGeneric/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.NonGeneric/src/Configurations.props b/src/System.Collections.NonGeneric/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Collections.NonGeneric/src/Configurations.props
+++ b/src/System.Collections.NonGeneric/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.NonGeneric/tests/Configurations.props b/src/System.Collections.NonGeneric/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Collections.NonGeneric/tests/Configurations.props
+++ b/src/System.Collections.NonGeneric/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.NonGeneric/tests/Performance/Configurations.props b/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
+++ b/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections.Specialized/Directory.Build.props b/src/System.Collections.Specialized/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Collections.Specialized/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections.Specialized/ref/Configurations.props b/src/System.Collections.Specialized/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Collections.Specialized/ref/Configurations.props
+++ b/src/System.Collections.Specialized/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Collections.Specialized/src/Configurations.props b/src/System.Collections.Specialized/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Collections.Specialized/src/Configurations.props
+++ b/src/System.Collections.Specialized/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Collections.Specialized/tests/Configurations.props b/src/System.Collections.Specialized/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Collections.Specialized/tests/Configurations.props
+++ b/src/System.Collections.Specialized/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections/Directory.Build.props b/src/System.Collections/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Collections/Directory.Build.props
+++ b/src/System.Collections/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections/ref/Configurations.props b/src/System.Collections/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Collections/ref/Configurations.props
+++ b/src/System.Collections/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Collections/src/Configurations.props b/src/System.Collections/src/Configurations.props
index 4b4fb25252b2..5f04e4fc0a36 100644
--- a/src/System.Collections/src/Configurations.props
+++ b/src/System.Collections/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       uapaot-Windows_NT;
diff --git a/src/System.Collections/tests/Configurations.props b/src/System.Collections/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Collections/tests/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections/tests/Performance/Configurations.props b/src/System.Collections/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Collections/tests/Performance/Configurations.props
+++ b/src/System.Collections/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.ComponentModel.Annotations/Directory.Build.props b/src/System.ComponentModel.Annotations/Directory.Build.props
index 60fe8512d801..dd7c9f8da62b 100644
--- a/src/System.ComponentModel.Annotations/Directory.Build.props
+++ b/src/System.ComponentModel.Annotations/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.2.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj b/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
index c9e4d8f08f4c..52a83ad23198 100644
--- a/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
+++ b/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
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diff --git a/src/System.ComponentModel.Annotations/ref/Configurations.props b/src/System.ComponentModel.Annotations/ref/Configurations.props
index 512a1e812f53..4f11d6b6ba32 100644
--- a/src/System.ComponentModel.Annotations/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ComponentModel.Annotations/src/Configurations.props b/src/System.ComponentModel.Annotations/src/Configurations.props
index 60bf5e1cbb77..73653a383a8b 100644
--- a/src/System.ComponentModel.Annotations/src/Configurations.props
+++ b/src/System.ComponentModel.Annotations/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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    	<PackageConfigurations>
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diff --git a/src/System.ComponentModel.Annotations/tests/Configurations.props b/src/System.ComponentModel.Annotations/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.ComponentModel.Annotations/tests/Configurations.props
+++ b/src/System.ComponentModel.Annotations/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/Directory.Build.props b/src/System.ComponentModel.Composition.Registration/Directory.Build.props
index 417924e5d99e..fc39df3d1e80 100644
--- a/src/System.ComponentModel.Composition.Registration/Directory.Build.props
+++ b/src/System.ComponentModel.Composition.Registration/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj b/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
index 631c247796ab..3ddc7512c707 100644
--- a/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
+++ b/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
     <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
     <ItemGroup>
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diff --git a/src/System.ComponentModel.Composition.Registration/ref/Configurations.props b/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
index a83fe20d892e..95a420d5eabf 100644
--- a/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/src/Configurations.props b/src/System.ComponentModel.Composition.Registration/src/Configurations.props
index 6bbc80a118ad..9a78db289070 100644
--- a/src/System.ComponentModel.Composition.Registration/src/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/tests/Configurations.props b/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
index e81ce942903c..ee2ff4abfe62 100644
--- a/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.Composition/Directory.Build.props b/src/System.ComponentModel.Composition/Directory.Build.props
index 417924e5d99e..fc39df3d1e80 100644
--- a/src/System.ComponentModel.Composition/Directory.Build.props
+++ b/src/System.ComponentModel.Composition/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj b/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
index ae3641d6a158..9af1bfd89306 100644
--- a/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
+++ b/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.ComponentModel.Composition.csproj">
diff --git a/src/System.ComponentModel.Composition/ref/Configurations.props b/src/System.ComponentModel.Composition/ref/Configurations.props
index a83fe20d892e..95a420d5eabf 100644
--- a/src/System.ComponentModel.Composition/ref/Configurations.props
+++ b/src/System.ComponentModel.Composition/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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       netstandard;
diff --git a/src/System.ComponentModel.Composition/src/Configurations.props b/src/System.ComponentModel.Composition/src/Configurations.props
index 884be53cf0e4..442af61adec4 100644
--- a/src/System.ComponentModel.Composition/src/Configurations.props
+++ b/src/System.ComponentModel.Composition/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
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diff --git a/src/System.ComponentModel.Composition/tests/Configurations.props b/src/System.ComponentModel.Composition/tests/Configurations.props
index e81ce942903c..ee2ff4abfe62 100644
--- a/src/System.ComponentModel.Composition/tests/Configurations.props
+++ b/src/System.ComponentModel.Composition/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props b/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
+++ b/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.EventBasedAsync/Directory.Build.props b/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
+++ b/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props b/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ComponentModel.EventBasedAsync/src/Configurations.props b/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props b/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ComponentModel.Primitives/Directory.Build.props b/src/System.ComponentModel.Primitives/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.ComponentModel.Primitives/Directory.Build.props
+++ b/src/System.ComponentModel.Primitives/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Primitives/ref/Configurations.props b/src/System.ComponentModel.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.ComponentModel.Primitives/ref/Configurations.props
+++ b/src/System.ComponentModel.Primitives/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.ComponentModel.Primitives/src/Configurations.props b/src/System.ComponentModel.Primitives/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.ComponentModel.Primitives/src/Configurations.props
+++ b/src/System.ComponentModel.Primitives/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.ComponentModel.Primitives/tests/Configurations.props b/src/System.ComponentModel.Primitives/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.ComponentModel.Primitives/tests/Configurations.props
+++ b/src/System.ComponentModel.Primitives/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ComponentModel.TypeConverter/Directory.Build.props b/src/System.ComponentModel.TypeConverter/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.ComponentModel.TypeConverter/Directory.Build.props
+++ b/src/System.ComponentModel.TypeConverter/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.TypeConverter/ref/Configurations.props b/src/System.ComponentModel.TypeConverter/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.ComponentModel.TypeConverter/ref/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.ComponentModel.TypeConverter/src/Configurations.props b/src/System.ComponentModel.TypeConverter/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.ComponentModel.TypeConverter/src/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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+<Project DefaultTargets="Build">
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diff --git a/src/System.ComponentModel.TypeConverter/tests/Configurations.props b/src/System.ComponentModel.TypeConverter/tests/Configurations.props
index 6a544338f323..bc04a198c0c8 100644
--- a/src/System.ComponentModel.TypeConverter/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props b/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.ComponentModel/Directory.Build.props b/src/System.ComponentModel/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
--- a/src/System.ComponentModel/Directory.Build.props
+++ b/src/System.ComponentModel/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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diff --git a/src/System.ComponentModel/ref/Configurations.props b/src/System.ComponentModel/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.ComponentModel/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.ComponentModel/src/Configurations.props b/src/System.ComponentModel/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.ComponentModel/src/Configurations.props
+++ b/src/System.ComponentModel/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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       netcoreapp;
diff --git a/src/System.ComponentModel/tests/Configurations.props b/src/System.ComponentModel/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.ComponentModel/tests/Configurations.props
+++ b/src/System.ComponentModel/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Composition.AttributedModel/Directory.Build.props b/src/System.Composition.AttributedModel/Directory.Build.props
index a73f4a74fb4d..797c3bcf88d9 100644
--- a/src/System.Composition.AttributedModel/Directory.Build.props
+++ b/src/System.Composition.AttributedModel/Directory.Build.props
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj b/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
index b4a29ff02a79..5ac478c92528 100644
--- a/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
+++ b/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <ItemGroup>
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diff --git a/src/System.Composition.AttributedModel/src/Configurations.props b/src/System.Composition.AttributedModel/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.AttributedModel/src/Configurations.props
+++ b/src/System.Composition.AttributedModel/src/Configurations.props
@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Composition.AttributedModel/tests/Configurations.props b/src/System.Composition.AttributedModel/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.AttributedModel/tests/Configurations.props
+++ b/src/System.Composition.AttributedModel/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Composition.Convention/Directory.Build.props b/src/System.Composition.Convention/Directory.Build.props
index a73f4a74fb4d..797c3bcf88d9 100644
--- a/src/System.Composition.Convention/Directory.Build.props
+++ b/src/System.Composition.Convention/Directory.Build.props
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj b/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
index afe080f77917..fd9b4bd16718 100644
--- a/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
+++ b/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.Convention.csproj">
diff --git a/src/System.Composition.Convention/src/Configurations.props b/src/System.Composition.Convention/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Convention/src/Configurations.props
+++ b/src/System.Composition.Convention/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Composition.Convention/tests/Configurations.props b/src/System.Composition.Convention/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Convention/tests/Configurations.props
+++ b/src/System.Composition.Convention/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Composition.Hosting/Directory.Build.props b/src/System.Composition.Hosting/Directory.Build.props
index a73f4a74fb4d..797c3bcf88d9 100644
--- a/src/System.Composition.Hosting/Directory.Build.props
+++ b/src/System.Composition.Hosting/Directory.Build.props
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj b/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
index 8c7f9af79ad2..ced6bbd4145b 100644
--- a/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
+++ b/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <ItemGroup>
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diff --git a/src/System.Composition.Hosting/src/Configurations.props b/src/System.Composition.Hosting/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Hosting/src/Configurations.props
+++ b/src/System.Composition.Hosting/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Composition.Hosting/tests/Configurations.props b/src/System.Composition.Hosting/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Hosting/tests/Configurations.props
+++ b/src/System.Composition.Hosting/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Composition.Runtime/Directory.Build.props b/src/System.Composition.Runtime/Directory.Build.props
index a73f4a74fb4d..797c3bcf88d9 100644
--- a/src/System.Composition.Runtime/Directory.Build.props
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@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj b/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
index 30929b111948..34d34f43d175 100644
--- a/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
+++ b/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.Runtime.csproj">
diff --git a/src/System.Composition.Runtime/src/Configurations.props b/src/System.Composition.Runtime/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Runtime/src/Configurations.props
+++ b/src/System.Composition.Runtime/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Runtime/tests/Configurations.props b/src/System.Composition.Runtime/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.Runtime/tests/Configurations.props
+++ b/src/System.Composition.Runtime/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.TypedParts/Directory.Build.props b/src/System.Composition.TypedParts/Directory.Build.props
index a73f4a74fb4d..797c3bcf88d9 100644
--- a/src/System.Composition.TypedParts/Directory.Build.props
+++ b/src/System.Composition.TypedParts/Directory.Build.props
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj b/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
index bad6e7aa011c..4c32458ea342 100644
--- a/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
+++ b/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.TypedParts.csproj">
diff --git a/src/System.Composition.TypedParts/src/Configurations.props b/src/System.Composition.TypedParts/src/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.TypedParts/src/Configurations.props
+++ b/src/System.Composition.TypedParts/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.TypedParts/tests/Configurations.props b/src/System.Composition.TypedParts/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition.TypedParts/tests/Configurations.props
+++ b/src/System.Composition.TypedParts/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/Directory.Build.props b/src/System.Composition/Directory.Build.props
index 410ee61a6c08..4768adf50cac 100644
--- a/src/System.Composition/Directory.Build.props
+++ b/src/System.Composition/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>1.3.0</PackageVersion>
diff --git a/src/System.Composition/pkg/System.Composition.pkgproj b/src/System.Composition/pkg/System.Composition.pkgproj
index 7674f0ab733d..84a6fd576471 100644
--- a/src/System.Composition/pkg/System.Composition.pkgproj
+++ b/src/System.Composition/pkg/System.Composition.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\..\System.Composition.AttributedModel\pkg\System.Composition.AttributedModel.pkgproj" />
diff --git a/src/System.Composition/tests/Configurations.props b/src/System.Composition/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition/tests/Configurations.props
+++ b/src/System.Composition/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props b/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
+++ b/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/tests/TestLibrary/Configurations.props b/src/System.Composition/tests/TestLibrary/Configurations.props
index 4c498002c4c7..935ac21e0d9c 100644
--- a/src/System.Composition/tests/TestLibrary/Configurations.props
+++ b/src/System.Composition/tests/TestLibrary/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard1.3;
diff --git a/src/System.Configuration.ConfigurationManager/Directory.Build.props b/src/System.Configuration.ConfigurationManager/Directory.Build.props
index 6a43eb658bfc..fb0aa67477c5 100644
--- a/src/System.Configuration.ConfigurationManager/Directory.Build.props
+++ b/src/System.Configuration.ConfigurationManager/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj b/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
index 50ec38ffddf2..fe577f749b93 100644
--- a/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
+++ b/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <ItemGroup>
     <ProjectReference Include="..\ref\System.Configuration.ConfigurationManager.csproj">
diff --git a/src/System.Configuration.ConfigurationManager/ref/Configurations.props b/src/System.Configuration.ConfigurationManager/ref/Configurations.props
index cfd4fad4086c..5d3db5425432 100644
--- a/src/System.Configuration.ConfigurationManager/ref/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Configuration.ConfigurationManager/src/Configurations.props b/src/System.Configuration.ConfigurationManager/src/Configurations.props
index 2ee0430b0342..d791a96d76ad 100644
--- a/src/System.Configuration.ConfigurationManager/src/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Configuration.ConfigurationManager/tests/Configurations.props b/src/System.Configuration.ConfigurationManager/tests/Configurations.props
index fc9ef9822c01..1f3bbe25f4e2 100644
--- a/src/System.Configuration.ConfigurationManager/tests/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Console/Directory.Build.props b/src/System.Console/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Console/Directory.Build.props
+++ b/src/System.Console/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Console/ref/Configurations.props b/src/System.Console/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Console/ref/Configurations.props
+++ b/src/System.Console/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Console/src/Configurations.props b/src/System.Console/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
--- a/src/System.Console/src/Configurations.props
+++ b/src/System.Console/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Console/tests/Configurations.props b/src/System.Console/tests/Configurations.props
index 7d8424e07163..6bee8a499b4c 100644
--- a/src/System.Console/tests/Configurations.props
+++ b/src/System.Console/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Console/tests/Performance/Configurations.props b/src/System.Console/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Console/tests/Performance/Configurations.props
+++ b/src/System.Console/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.Common/Directory.Build.props b/src/System.Data.Common/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Data.Common/Directory.Build.props
+++ b/src/System.Data.Common/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Data.Common/ref/Configurations.props b/src/System.Data.Common/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Data.Common/ref/Configurations.props
+++ b/src/System.Data.Common/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Data.Common/src/Configurations.props b/src/System.Data.Common/src/Configurations.props
index f1e1082d04ce..d84d411d0233 100644
--- a/src/System.Data.Common/src/Configurations.props
+++ b/src/System.Data.Common/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
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diff --git a/src/System.Data.Common/tests/Configurations.props b/src/System.Data.Common/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Data.Common/tests/Configurations.props
+++ b/src/System.Data.Common/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Data.DataSetExtensions/Directory.Build.props b/src/System.Data.DataSetExtensions/Directory.Build.props
index 8f0026bf538b..2ff5413b04e1 100644
--- a/src/System.Data.DataSetExtensions/Directory.Build.props
+++ b/src/System.Data.DataSetExtensions/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj b/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
index 94d42b1425cf..e60f4faf31f9 100644
--- a/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
+++ b/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
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diff --git a/src/System.Data.DataSetExtensions/ref/Configurations.props b/src/System.Data.DataSetExtensions/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Data.DataSetExtensions/ref/Configurations.props
+++ b/src/System.Data.DataSetExtensions/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.DataSetExtensions/src/Configurations.props b/src/System.Data.DataSetExtensions/src/Configurations.props
index 77e29493b0ec..1bfc3dbdee70 100644
--- a/src/System.Data.DataSetExtensions/src/Configurations.props
+++ b/src/System.Data.DataSetExtensions/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.DataSetExtensions/tests/Configurations.props b/src/System.Data.DataSetExtensions/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Data.DataSetExtensions/tests/Configurations.props
+++ b/src/System.Data.DataSetExtensions/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.Odbc/Directory.Build.props b/src/System.Data.Odbc/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Data.Odbc/Directory.Build.props
+++ b/src/System.Data.Odbc/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj b/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
index 18d1c1ea7bfb..7fadb9c6be89 100644
--- a/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
+++ b/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
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diff --git a/src/System.Data.Odbc/ref/Configurations.props b/src/System.Data.Odbc/ref/Configurations.props
index 6308641bd9aa..2a7570a4d9b5 100644
--- a/src/System.Data.Odbc/ref/Configurations.props
+++ b/src/System.Data.Odbc/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.Odbc/src/Configurations.props b/src/System.Data.Odbc/src/Configurations.props
index b0b3fb196b0f..09c917c7d274 100644
--- a/src/System.Data.Odbc/src/Configurations.props
+++ b/src/System.Data.Odbc/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
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diff --git a/src/System.Data.Odbc/tests/Configurations.props b/src/System.Data.Odbc/tests/Configurations.props
index 30935d672ac5..9e9725d659f3 100644
--- a/src/System.Data.Odbc/tests/Configurations.props
+++ b/src/System.Data.Odbc/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Data.SqlClient/Directory.Build.props b/src/System.Data.SqlClient/Directory.Build.props
index 3dd700d4a977..e0468d819f86 100644
--- a/src/System.Data.SqlClient/Directory.Build.props
+++ b/src/System.Data.SqlClient/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <PropertyGroup>
     <!-- Must be kept in sync with pkg\Microsoft.Windows.Compatibility\Microsoft.Windows.Compatibility.pkgproj -->
diff --git a/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj b/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
index f741b8e81978..db992865ad67 100644
--- a/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
+++ b/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Data.SqlClient.csproj">
diff --git a/src/System.Data.SqlClient/ref/Configurations.props b/src/System.Data.SqlClient/ref/Configurations.props
index df79e9d4aacc..36e46c549c24 100644
--- a/src/System.Data.SqlClient/ref/Configurations.props
+++ b/src/System.Data.SqlClient/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netcoreapp2.1;
diff --git a/src/System.Data.SqlClient/src/Configurations.props b/src/System.Data.SqlClient/src/Configurations.props
index d031687dd6c4..83c30b2067bf 100644
--- a/src/System.Data.SqlClient/src/Configurations.props
+++ b/src/System.Data.SqlClient/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard-Unix;
diff --git a/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets b/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
index ee015011f5a1..aebf66f5726a 100644
--- a/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
+++ b/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <Compile Include="$(IntermediateOutputPath)\ThisAssembly.cs"/>
   </ItemGroup>
diff --git a/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props b/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
index 0b74e0036952..27ee17721c42 100644
--- a/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard-Unix;
diff --git a/src/System.Data.SqlClient/tests/ManualTests/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
index e172d8ba0cf2..5823430bd1d2 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
index e172d8ba0cf2..5823430bd1d2 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
index e172d8ba0cf2..5823430bd1d2 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
index e172d8ba0cf2..5823430bd1d2 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
index 8b0be9587f98..21dfd499e0b8 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Diagnostics.Contracts/Directory.Build.props b/src/System.Diagnostics.Contracts/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
--- a/src/System.Diagnostics.Contracts/Directory.Build.props
+++ b/src/System.Diagnostics.Contracts/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.Contracts/ref/Configurations.props b/src/System.Diagnostics.Contracts/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.Contracts/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Diagnostics.Contracts/src/Configurations.props b/src/System.Diagnostics.Contracts/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Diagnostics.Contracts/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Diagnostics.Contracts/tests/Configurations.props b/src/System.Diagnostics.Contracts/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Diagnostics.Contracts/tests/Configurations.props
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diff --git a/src/System.Diagnostics.Debug/Directory.Build.props b/src/System.Diagnostics.Debug/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Diagnostics.Debug/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Diagnostics.Debug/ref/Configurations.props b/src/System.Diagnostics.Debug/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.Debug/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Diagnostics.Debug/src/Configurations.props b/src/System.Diagnostics.Debug/src/Configurations.props
index 075270b6ee74..af2d398e8199 100644
--- a/src/System.Diagnostics.Debug/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Diagnostics.Debug/tests/Configurations.props b/src/System.Diagnostics.Debug/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Diagnostics.Debug/tests/Configurations.props
+++ b/src/System.Diagnostics.Debug/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.DiagnosticSource/Directory.Build.props b/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
index 8014598790e8..01b8f26576bb 100644
--- a/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
+++ b/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj b/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
index 5c0fe4044e0c..a78f1792d6df 100644
--- a/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
+++ b/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props b/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props
index 7b5f53ade59c..00eb7a3c650f 100644
--- a/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.DiagnosticSource/src/Configurations.props b/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
index 55216e40dfc0..c3e21dcf2fb1 100644
--- a/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
+++ b/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props b/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props
index 921f54de300e..3f396acc8a01 100644
--- a/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Diagnostics.EventLog/Directory.Build.props b/src/System.Diagnostics.EventLog/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Diagnostics.EventLog/Directory.Build.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj b/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
index b0f5b646fb3b..44584a8a9a99 100644
--- a/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
+++ b/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
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diff --git a/src/System.Diagnostics.EventLog/ref/Configurations.props b/src/System.Diagnostics.EventLog/ref/Configurations.props
index 4b08ca9da05d..6e1c7cbda03a 100644
--- a/src/System.Diagnostics.EventLog/ref/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Diagnostics.EventLog/src/Configurations.props b/src/System.Diagnostics.EventLog/src/Configurations.props
index 940e8f643526..dd95055fb8ff 100644
--- a/src/System.Diagnostics.EventLog/src/Configurations.props
+++ b/src/System.Diagnostics.EventLog/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.EventLog/tests/Configurations.props b/src/System.Diagnostics.EventLog/tests/Configurations.props
index 237253623aea..206336e6d841 100644
--- a/src/System.Diagnostics.EventLog/tests/Configurations.props
+++ b/src/System.Diagnostics.EventLog/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.FileVersionInfo/Directory.Build.props b/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
index f1692a145094..761e10102c4d 100644
--- a/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
+++ b/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props b/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.FileVersionInfo/src/Configurations.props b/src/System.Diagnostics.FileVersionInfo/src/Configurations.props
index 1d686837b0ac..969a8d8272d0 100644
--- a/src/System.Diagnostics.FileVersionInfo/src/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
index fc9ef9822c01..1f3bbe25f4e2 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
index 5faf9da6c56d..459b6b284dda 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Release|x64">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
index fc9ef9822c01..1f3bbe25f4e2 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
index 2afd2b444e48..5493db5e4084 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Release|x64">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
index fc9ef9822c01..1f3bbe25f4e2 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
index 69c6ed60fe12..d5a5a226c4a5 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Release|x64">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
index fc9ef9822c01..1f3bbe25f4e2 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
index 58b5995845eb..cef03dd79bb6 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Diagnostics.PerformanceCounter/Directory.Build.props b/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
+++ b/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj b/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
index 81b114acfd6a..529cf1c3312b 100644
--- a/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
+++ b/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Diagnostics.PerformanceCounter.csproj">
diff --git a/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props b/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
index c606373c53f8..afde24870c12 100644
--- a/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       net461;
diff --git a/src/System.Diagnostics.PerformanceCounter/src/Configurations.props b/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
index b5e4ccac8f25..2cd87e6d85aa 100644
--- a/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0-Windows_NT;
diff --git a/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props b/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
index 51d1fc230977..3846dcdc8277 100644
--- a/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.Process/Directory.Build.props b/src/System.Diagnostics.Process/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Diagnostics.Process/Directory.Build.props
+++ b/src/System.Diagnostics.Process/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Process/ref/Configurations.props b/src/System.Diagnostics.Process/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.Process/ref/Configurations.props
+++ b/src/System.Diagnostics.Process/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Process/src/Configurations.props b/src/System.Diagnostics.Process/src/Configurations.props
index 8e84cf544a0a..26edecb79eac 100644
--- a/src/System.Diagnostics.Process/src/Configurations.props
+++ b/src/System.Diagnostics.Process/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Diagnostics.Process/tests/Configurations.props b/src/System.Diagnostics.Process/tests/Configurations.props
index 5d07f60b8f67..a16e3384363a 100644
--- a/src/System.Diagnostics.Process/tests/Configurations.props
+++ b/src/System.Diagnostics.Process/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Diagnostics.Process/tests/Performance/Configurations.props b/src/System.Diagnostics.Process/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Diagnostics.Process/tests/Performance/Configurations.props
+++ b/src/System.Diagnostics.Process/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.StackTrace/Directory.Build.props b/src/System.Diagnostics.StackTrace/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Diagnostics.StackTrace/Directory.Build.props
+++ b/src/System.Diagnostics.StackTrace/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.StackTrace/ref/Configurations.props b/src/System.Diagnostics.StackTrace/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.StackTrace/ref/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.StackTrace/src/Configurations.props b/src/System.Diagnostics.StackTrace/src/Configurations.props
index 246c274cbefb..d836e2fccfe7 100644
--- a/src/System.Diagnostics.StackTrace/src/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Diagnostics.StackTrace/tests/Configurations.props b/src/System.Diagnostics.StackTrace/tests/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Diagnostics.StackTrace/tests/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props b/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
index bbb5be814ea2..201076ca67cd 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
index 6a544338f323..bc04a198c0c8 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.Tools/Directory.Build.props b/src/System.Diagnostics.Tools/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Diagnostics.Tools/Directory.Build.props
+++ b/src/System.Diagnostics.Tools/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Tools/ref/Configurations.props b/src/System.Diagnostics.Tools/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.Tools/ref/Configurations.props
+++ b/src/System.Diagnostics.Tools/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Tools/src/Configurations.props b/src/System.Diagnostics.Tools/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Diagnostics.Tools/src/Configurations.props
+++ b/src/System.Diagnostics.Tools/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.Tools/tests/Configurations.props b/src/System.Diagnostics.Tools/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Diagnostics.Tools/tests/Configurations.props
+++ b/src/System.Diagnostics.Tools/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.TraceSource/Directory.Build.props b/src/System.Diagnostics.TraceSource/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Diagnostics.TraceSource/Directory.Build.props
+++ b/src/System.Diagnostics.TraceSource/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.TraceSource/ref/Configurations.props b/src/System.Diagnostics.TraceSource/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.TraceSource/ref/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.TraceSource/src/Configurations.props b/src/System.Diagnostics.TraceSource/src/Configurations.props
index 8e84cf544a0a..26edecb79eac 100644
--- a/src/System.Diagnostics.TraceSource/src/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Diagnostics.TraceSource/tests/Configurations.props b/src/System.Diagnostics.TraceSource/tests/Configurations.props
index 9cb8d824d9fa..70c86ae5ae1b 100644
--- a/src/System.Diagnostics.TraceSource/tests/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.Tracing/Directory.Build.props b/src/System.Diagnostics.Tracing/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Diagnostics.Tracing/Directory.Build.props
+++ b/src/System.Diagnostics.Tracing/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Tracing/ref/Configurations.props b/src/System.Diagnostics.Tracing/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Diagnostics.Tracing/ref/Configurations.props
+++ b/src/System.Diagnostics.Tracing/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Tracing/src/Configurations.props b/src/System.Diagnostics.Tracing/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Diagnostics.Tracing/src/Configurations.props
+++ b/src/System.Diagnostics.Tracing/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.Tracing/tests/Configurations.props b/src/System.Diagnostics.Tracing/tests/Configurations.props
index 1040c9ba37f0..e9f658c09911 100644
--- a/src/System.Diagnostics.Tracing/tests/Configurations.props
+++ b/src/System.Diagnostics.Tracing/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices.AccountManagement/Directory.Build.props b/src/System.DirectoryServices.AccountManagement/Directory.Build.props
index 801e8b21a2a6..8dc274fa4c6d 100644
--- a/src/System.DirectoryServices.AccountManagement/Directory.Build.props
+++ b/src/System.DirectoryServices.AccountManagement/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj b/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
index 55792c18113f..3d0905afc29a 100644
--- a/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
+++ b/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.AccountManagement.csproj">
diff --git a/src/System.DirectoryServices.AccountManagement/ref/Configurations.props b/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.AccountManagement/src/Configurations.props b/src/System.DirectoryServices.AccountManagement/src/Configurations.props
index e32237183221..5e32c7ace234 100644
--- a/src/System.DirectoryServices.AccountManagement/src/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.AccountManagement/tests/Configurations.props b/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
index 51d1fc230977..3846dcdc8277 100644
--- a/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices.Protocols/Directory.Build.props b/src/System.DirectoryServices.Protocols/Directory.Build.props
index 7c0fa810dcce..7b2836163cb7 100644
--- a/src/System.DirectoryServices.Protocols/Directory.Build.props
+++ b/src/System.DirectoryServices.Protocols/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj b/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
index 39b7efaf0f8f..4e42969db03f 100644
--- a/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
+++ b/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.Protocols.csproj">
diff --git a/src/System.DirectoryServices.Protocols/ref/Configurations.props b/src/System.DirectoryServices.Protocols/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.DirectoryServices.Protocols/ref/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.Protocols/src/Configurations.props b/src/System.DirectoryServices.Protocols/src/Configurations.props
index e32237183221..5e32c7ace234 100644
--- a/src/System.DirectoryServices.Protocols/src/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.Protocols/tests/Configurations.props b/src/System.DirectoryServices.Protocols/tests/Configurations.props
index 808952d28a51..76cbebba2ba4 100644
--- a/src/System.DirectoryServices.Protocols/tests/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
         netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices/Directory.Build.props b/src/System.DirectoryServices/Directory.Build.props
index 7c0fa810dcce..7b2836163cb7 100644
--- a/src/System.DirectoryServices/Directory.Build.props
+++ b/src/System.DirectoryServices/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj b/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
index 19a763e3dfe9..e01f114c0168 100644
--- a/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
+++ b/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.csproj">
diff --git a/src/System.DirectoryServices/ref/Configurations.props b/src/System.DirectoryServices/ref/Configurations.props
index 77e29493b0ec..1bfc3dbdee70 100644
--- a/src/System.DirectoryServices/ref/Configurations.props
+++ b/src/System.DirectoryServices/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.DirectoryServices/src/Configurations.props b/src/System.DirectoryServices/src/Configurations.props
index e32237183221..5e32c7ace234 100644
--- a/src/System.DirectoryServices/src/Configurations.props
+++ b/src/System.DirectoryServices/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices/tests/Configurations.props b/src/System.DirectoryServices/tests/Configurations.props
index 808952d28a51..76cbebba2ba4 100644
--- a/src/System.DirectoryServices/tests/Configurations.props
+++ b/src/System.DirectoryServices/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Drawing.Common/Directory.Build.props b/src/System.Drawing.Common/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Drawing.Common/Directory.Build.props
+++ b/src/System.Drawing.Common/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj b/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
index 8eb982d14e51..6f66d6a23fcf 100644
--- a/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
+++ b/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Drawing.Common.csproj">
diff --git a/src/System.Drawing.Common/ref/Configurations.props b/src/System.Drawing.Common/ref/Configurations.props
index 70c8504051fd..502b0dc020f5 100644
--- a/src/System.Drawing.Common/ref/Configurations.props
+++ b/src/System.Drawing.Common/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Drawing.Common/src/Configurations.props b/src/System.Drawing.Common/src/Configurations.props
index 8a223c86a610..0ba881f17a38 100644
--- a/src/System.Drawing.Common/src/Configurations.props
+++ b/src/System.Drawing.Common/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
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diff --git a/src/System.Drawing.Common/tests/Configurations.props b/src/System.Drawing.Common/tests/Configurations.props
index 3efbed0bcd17..461b7a8ee559 100644
--- a/src/System.Drawing.Common/tests/Configurations.props
+++ b/src/System.Drawing.Common/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Drawing.Common/tests/Performance/Configurations.props b/src/System.Drawing.Common/tests/Performance/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Drawing.Common/tests/Performance/Configurations.props
+++ b/src/System.Drawing.Common/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Drawing.Primitives/Directory.Build.props b/src/System.Drawing.Primitives/Directory.Build.props
index 6662cee8d62d..2b898e184148 100644
--- a/src/System.Drawing.Primitives/Directory.Build.props
+++ b/src/System.Drawing.Primitives/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Drawing.Primitives/ref/Configurations.props b/src/System.Drawing.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Drawing.Primitives/ref/Configurations.props
+++ b/src/System.Drawing.Primitives/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Drawing.Primitives/src/Configurations.props b/src/System.Drawing.Primitives/src/Configurations.props
index bbb5be814ea2..201076ca67cd 100644
--- a/src/System.Drawing.Primitives/src/Configurations.props
+++ b/src/System.Drawing.Primitives/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Drawing.Primitives/tests/Configurations.props b/src/System.Drawing.Primitives/tests/Configurations.props
index 65891797e285..b3419e3ba75b 100644
--- a/src/System.Drawing.Primitives/tests/Configurations.props
+++ b/src/System.Drawing.Primitives/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Drawing.Primitives/tests/Performance/Configurations.props b/src/System.Drawing.Primitives/tests/Performance/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Drawing.Primitives/tests/Performance/Configurations.props
+++ b/src/System.Drawing.Primitives/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Dynamic.Runtime/Directory.Build.props b/src/System.Dynamic.Runtime/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Dynamic.Runtime/Directory.Build.props
+++ b/src/System.Dynamic.Runtime/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Dynamic.Runtime/ref/Configurations.props b/src/System.Dynamic.Runtime/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Dynamic.Runtime/ref/Configurations.props
+++ b/src/System.Dynamic.Runtime/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Dynamic.Runtime/src/Configurations.props b/src/System.Dynamic.Runtime/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Dynamic.Runtime/src/Configurations.props
+++ b/src/System.Dynamic.Runtime/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Dynamic.Runtime/tests/Configurations.props b/src/System.Dynamic.Runtime/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Dynamic.Runtime/tests/Configurations.props
+++ b/src/System.Dynamic.Runtime/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Globalization.Calendars/Directory.Build.props b/src/System.Globalization.Calendars/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Globalization.Calendars/Directory.Build.props
+++ b/src/System.Globalization.Calendars/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Globalization.Calendars/ref/Configurations.props b/src/System.Globalization.Calendars/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Globalization.Calendars/ref/Configurations.props
+++ b/src/System.Globalization.Calendars/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Globalization.Calendars/src/Configurations.props b/src/System.Globalization.Calendars/src/Configurations.props
index bf5737bf96af..eff5e83b15ea 100644
--- a/src/System.Globalization.Calendars/src/Configurations.props
+++ b/src/System.Globalization.Calendars/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
+++ b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Globalization.Calendars/tests/Configurations.props b/src/System.Globalization.Calendars/tests/Configurations.props
index 81ec505f6bfb..57b5cf7f917d 100644
--- a/src/System.Globalization.Calendars/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Globalization.Extensions/Directory.Build.props b/src/System.Globalization.Extensions/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Globalization.Extensions/Directory.Build.props
+++ b/src/System.Globalization.Extensions/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Globalization.Extensions/ref/Configurations.props b/src/System.Globalization.Extensions/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Globalization.Extensions/ref/Configurations.props
+++ b/src/System.Globalization.Extensions/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Globalization.Extensions/src/Configurations.props b/src/System.Globalization.Extensions/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
--- a/src/System.Globalization.Extensions/src/Configurations.props
+++ b/src/System.Globalization.Extensions/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Globalization.Extensions/tests/Configurations.props b/src/System.Globalization.Extensions/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Globalization.Extensions/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Globalization/Directory.Build.props b/src/System.Globalization/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Globalization/Directory.Build.props
+++ b/src/System.Globalization/Directory.Build.props
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diff --git a/src/System.Globalization/ref/Configurations.props b/src/System.Globalization/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Globalization/src/Configurations.props b/src/System.Globalization/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
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diff --git a/src/System.Globalization/tests/Configurations.props b/src/System.Globalization/tests/Configurations.props
index d4273b555cf1..2c7e98fabbc8 100644
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diff --git a/src/System.Globalization/tests/Invariant/Configurations.props b/src/System.Globalization/tests/Invariant/Configurations.props
index 2845c11c541d..323c11cf6937 100644
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diff --git a/src/System.Globalization/tests/Performance/Configurations.props b/src/System.Globalization/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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index 2744d25eb473..525af20f9ebd 100644
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index 2845c11c541d..323c11cf6937 100644
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index 17d3231f8e68..20e7ab532f10 100644
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diff --git a/src/System.IO.Compression.Brotli/tests/Configurations.props b/src/System.IO.Compression.Brotli/tests/Configurations.props
index 17d3231f8e68..20e7ab532f10 100644
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index 9b2f102c3a28..d6283543de1d 100644
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diff --git a/src/System.IO.Compression.ZipFile/Directory.Build.props b/src/System.IO.Compression.ZipFile/Directory.Build.props
index 883ca57de19c..26490d70675e 100644
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index c70175586371..5e830ff8b39b 100644
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index a8910ef718c7..4c5bf3b44410 100644
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index 8b803e0772f2..2c27f0d86a22 100644
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index 2744d25eb473..525af20f9ebd 100644
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index c70175586371..5e830ff8b39b 100644
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index 62eb1c477680..f612570ae28e 100644
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index 62eb1c477680..f612570ae28e 100644
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index c398e42e8994..df9b80b230a8 100644
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index b6a8bc6d7a7f..5dc2244a2bf5 100644
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index 4d0f2ca7bdf0..93b5577a3b05 100644
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index d89aaeef7b41..70939eaeba56 100644
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index 48ea1f6b10fa..93ad7001181b 100644
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index 249c8c18b46b..b6f983f5d9de 100644
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index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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index 62eb1c477680..f612570ae28e 100644
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diff --git a/src/System.IO.FileSystem.DriveInfo/tests/Configurations.props b/src/System.IO.FileSystem.DriveInfo/tests/Configurations.props
index c0146cddf372..3c8ea6d186d7 100644
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index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.IO.FileSystem.Primitives/src/Configurations.props b/src/System.IO.FileSystem.Primitives/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
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index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.IO.FileSystem.Watcher/Directory.Build.props b/src/System.IO.FileSystem.Watcher/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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index 6f23c82b9617..0f084809f0f5 100644
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index a19f863bc693..470d83fd736c 100644
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index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.IO.FileSystem/src/Configurations.props b/src/System.IO.FileSystem/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.IO.FileSystem/tests/Configurations.props b/src/System.IO.FileSystem/tests/Configurations.props
index e245e487339e..0e3daf37b527 100644
--- a/src/System.IO.FileSystem/tests/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.IO.FileSystem/tests/Performance/Configurations.props b/src/System.IO.FileSystem/tests/Performance/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.IO.FileSystem/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.IsolatedStorage/Directory.Build.props b/src/System.IO.IsolatedStorage/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.IO.IsolatedStorage/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.IO.IsolatedStorage/ref/Configurations.props b/src/System.IO.IsolatedStorage/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.IO.IsolatedStorage/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.IsolatedStorage/src/Configurations.props b/src/System.IO.IsolatedStorage/src/Configurations.props
index b416be27c1b5..43a074e86c94 100644
--- a/src/System.IO.IsolatedStorage/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.IsolatedStorage/tests/Configurations.props b/src/System.IO.IsolatedStorage/tests/Configurations.props
index e245e487339e..0e3daf37b527 100644
--- a/src/System.IO.IsolatedStorage/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.MemoryMappedFiles/Directory.Build.props b/src/System.IO.MemoryMappedFiles/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.IO.MemoryMappedFiles/Directory.Build.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.MemoryMappedFiles/ref/Configurations.props b/src/System.IO.MemoryMappedFiles/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.MemoryMappedFiles/src/Configurations.props b/src/System.IO.MemoryMappedFiles/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.MemoryMappedFiles/tests/Configurations.props b/src/System.IO.MemoryMappedFiles/tests/Configurations.props
index cfc57211a43f..fc09ee113b7f 100644
--- a/src/System.IO.MemoryMappedFiles/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.MemoryMappedFiles/tests/Performance/Configurations.props b/src/System.IO.MemoryMappedFiles/tests/Performance/Configurations.props
index cfc57211a43f..fc09ee113b7f 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.Packaging/Directory.Build.props b/src/System.IO.Packaging/Directory.Build.props
index afbc21511c0c..38448e58868c 100644
--- a/src/System.IO.Packaging/Directory.Build.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.Packaging/pkg/System.IO.Packaging.pkgproj b/src/System.IO.Packaging/pkg/System.IO.Packaging.pkgproj
index 57c1ecfa7271..8cd34889f746 100644
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index b79139610e47..5376bb62ca67 100644
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index fa2d93a4253f..5202ace2dd34 100644
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diff --git a/src/System.IO.Packaging/tests/Configurations.props b/src/System.IO.Packaging/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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@@ -1,5 +1,5 @@
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index 6c5c34bc9f44..e717e081f0bc 100644
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diff --git a/src/System.IO.Pipelines/pkg/System.IO.Pipelines.pkgproj b/src/System.IO.Pipelines/pkg/System.IO.Pipelines.pkgproj
index 34411f828543..693eff016b25 100644
--- a/src/System.IO.Pipelines/pkg/System.IO.Pipelines.pkgproj
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diff --git a/src/System.IO.Pipelines/ref/Configurations.props b/src/System.IO.Pipelines/ref/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.Pipelines/src/Configurations.props b/src/System.IO.Pipelines/src/Configurations.props
index 552a366c58a1..a0fcb3c9c927 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.Pipelines/tests/Configurations.props b/src/System.IO.Pipelines/tests/Configurations.props
index b63c2c5ee82f..68fc5c0f768d 100644
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diff --git a/src/System.IO.Pipelines/tests/Performance/Configurations.props b/src/System.IO.Pipelines/tests/Performance/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
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diff --git a/src/System.IO.Pipes.AccessControl/Directory.Build.props b/src/System.IO.Pipes.AccessControl/Directory.Build.props
index 4db0cb8709d1..4e705200d9bc 100644
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@@ -1,5 +1,5 @@
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index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.IO.Pipes.AccessControl/src/Configurations.props b/src/System.IO.Pipes.AccessControl/src/Configurations.props
index a5c6d7b994ab..cc1b99db58ae 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.IO.Pipes.AccessControl/tests/Configurations.props b/src/System.IO.Pipes.AccessControl/tests/Configurations.props
index c18b1a3b9ddd..614839f32e5c 100644
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diff --git a/src/System.IO.Pipes/Directory.Build.props b/src/System.IO.Pipes/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.IO.Pipes/src/Configurations.props b/src/System.IO.Pipes/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
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index 742254e254b5..74c30f5bb315 100644
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diff --git a/src/System.IO.Pipes/tests/Performance/Configurations.props b/src/System.IO.Pipes/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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index 092fc203454b..923d85953894 100644
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diff --git a/src/System.IO.Ports/pkg/System.IO.Ports.pkgproj b/src/System.IO.Ports/pkg/System.IO.Ports.pkgproj
index c8c6c68711af..464f448dc79b 100644
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index e0619ade04c0..10ee8b5f5c5b 100644
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index 66256db14d4c..641f0187c023 100644
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diff --git a/src/System.IO.Ports/tests/Configurations.props b/src/System.IO.Ports/tests/Configurations.props
index d9bebedf9217..c335b3b180e7 100644
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index 166d0a25e062..4988fc07e1bc 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.IO.UnmanagedMemoryStream/src/Configurations.props b/src/System.IO.UnmanagedMemoryStream/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.IO.UnmanagedMemoryStream/tests/Configurations.props b/src/System.IO.UnmanagedMemoryStream/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
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diff --git a/src/System.IO/Directory.Build.props b/src/System.IO/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
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diff --git a/src/System.IO/ref/Configurations.props b/src/System.IO/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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index dcb70afd11c0..74ab6cde0598 100644
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diff --git a/src/System.IO/tests/Configurations.props b/src/System.IO/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
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diff --git a/src/System.IO/tests/Performance/Configurations.props b/src/System.IO/tests/Performance/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
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diff --git a/src/System.Json/Directory.Build.props b/src/System.Json/Directory.Build.props
index 05889db601ee..ecf29b1d7101 100644
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diff --git a/src/System.Json/pkg/System.Json.pkgproj b/src/System.Json/pkg/System.Json.pkgproj
index 7e0c508e0151..13b4beb96921 100644
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diff --git a/src/System.Json/src/Configurations.props b/src/System.Json/src/Configurations.props
index 84da57e60d75..975d55ecff8d 100644
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diff --git a/src/System.Json/tests/Configurations.props b/src/System.Json/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.Linq.Expressions/Directory.Build.props b/src/System.Linq.Expressions/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
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index c70175586371..5e830ff8b39b 100644
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index e92ae794e599..a2b28a2d7864 100644
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index e058fea441ec..05acab2cb530 100644
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diff --git a/src/System.Linq.Parallel/Directory.Build.props b/src/System.Linq.Parallel/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Linq.Parallel/src/Configurations.props b/src/System.Linq.Parallel/src/Configurations.props
index b7611d75b720..296b296ee218 100644
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index eb4a540a928f..95f2aee4ed8c 100644
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index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.Linq.Queryable/Directory.Build.props b/src/System.Linq.Queryable/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
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@@ -1,5 +1,5 @@
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Linq.Queryable/src/Configurations.props b/src/System.Linq.Queryable/src/Configurations.props
index b7611d75b720..296b296ee218 100644
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index 77a4b65bc94a..4c35b6322355 100644
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index 047458dfc570..b90a424e652c 100644
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Linq/src/Configurations.props b/src/System.Linq/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
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index 203992ff0e58..ceea350bd5dd 100644
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diff --git a/src/System.Linq/tests/Performance/Configurations.props b/src/System.Linq/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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index 7c0fa810dcce..7b2836163cb7 100644
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diff --git a/src/System.Management/pkg/System.Management.pkgproj b/src/System.Management/pkg/System.Management.pkgproj
index ab12bdb52dac..4695e02fd9cb 100644
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index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.Management/src/Configurations.props b/src/System.Management/src/Configurations.props
index e32237183221..5e32c7ace234 100644
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diff --git a/src/System.Management/tests/Configurations.props b/src/System.Management/tests/Configurations.props
index 808952d28a51..76cbebba2ba4 100644
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diff --git a/src/System.Memory/Directory.Build.props b/src/System.Memory/Directory.Build.props
index 1627cb108724..ad6ff0fc2479 100644
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diff --git a/src/System.Memory/ref/Configurations.props b/src/System.Memory/ref/Configurations.props
index 7e038443ee6f..68b5b2fac5f4 100644
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diff --git a/src/System.Memory/src/Configurations.props b/src/System.Memory/src/Configurations.props
index bf5737bf96af..eff5e83b15ea 100644
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diff --git a/src/System.Memory/tests/Configurations.props b/src/System.Memory/tests/Configurations.props
index 02721ef2a9b7..8fbfed8adee6 100644
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diff --git a/src/System.Memory/tests/Performance/Configurations.props b/src/System.Memory/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
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diff --git a/src/System.Net.Http.Rtc/Directory.Build.props b/src/System.Net.Http.Rtc/Directory.Build.props
index 9fdb581abb34..410d5b1a0641 100644
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diff --git a/src/System.Net.Http.Rtc/ref/Configurations.props b/src/System.Net.Http.Rtc/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Net.Http.Rtc/src/Configurations.props b/src/System.Net.Http.Rtc/src/Configurations.props
index 0f1f50d3ec47..9d59a0f8184a 100644
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       uapaot-Windows_NT;
diff --git a/src/System.Net.Http.WinHttpHandler/Directory.Build.props b/src/System.Net.Http.WinHttpHandler/Directory.Build.props
index afbc21511c0c..38448e58868c 100644
--- a/src/System.Net.Http.WinHttpHandler/Directory.Build.props
+++ b/src/System.Net.Http.WinHttpHandler/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj b/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj
index 543cb6bd775c..64c64c13a280 100644
--- a/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj
+++ b/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Net.Http.WinHttpHandler.csproj">
diff --git a/src/System.Net.Http.WinHttpHandler/ref/Configurations.props b/src/System.Net.Http.WinHttpHandler/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.Http.WinHttpHandler/ref/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http.WinHttpHandler/src/Configurations.props b/src/System.Net.Http.WinHttpHandler/src/Configurations.props
index ff5b0bce1165..7147eef7a3f6 100644
--- a/src/System.Net.Http.WinHttpHandler/src/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
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diff --git a/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild b/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild
index 78d9673f5eb7..42d70043a659 100644
--- a/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild
+++ b/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
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diff --git a/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props b/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
index 249c8c18b46b..b6f983f5d9de 100644
--- a/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard-Windows_NT;
diff --git a/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props b/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
index 249c8c18b46b..b6f983f5d9de 100644
--- a/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/Directory.Build.props b/src/System.Net.Http/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Net.Http/Directory.Build.props
+++ b/src/System.Net.Http/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/ref/Configurations.props b/src/System.Net.Http/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Http/ref/Configurations.props
+++ b/src/System.Net.Http/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Http/src/Configurations.props b/src/System.Net.Http/src/Configurations.props
index 8c59b78a8482..97c359ead69f 100644
--- a/src/System.Net.Http/src/Configurations.props
+++ b/src/System.Net.Http/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Http/tests/FunctionalTests/Configurations.props b/src/System.Net.Http/tests/FunctionalTests/Configurations.props
index d4c90c9309f6..4aff6eb75715 100644
--- a/src/System.Net.Http/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Http/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Http/tests/Performance/Configurations.props b/src/System.Net.Http/tests/Performance/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Net.Http/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Http/tests/UnitTests/Configurations.props b/src/System.Net.Http/tests/UnitTests/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Net.Http/tests/UnitTests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.HttpListener/Directory.Build.props b/src/System.Net.HttpListener/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Net.HttpListener/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.HttpListener/ref/Configurations.props b/src/System.Net.HttpListener/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.HttpListener/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.HttpListener/src/Configurations.props b/src/System.Net.HttpListener/src/Configurations.props
index bbb5be814ea2..201076ca67cd 100644
--- a/src/System.Net.HttpListener/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.HttpListener/tests/Configurations.props b/src/System.Net.HttpListener/tests/Configurations.props
index 7817fb09cb19..184d842e9b16 100644
--- a/src/System.Net.HttpListener/tests/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Mail/Directory.Build.props b/src/System.Net.Mail/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Net.Mail/Directory.Build.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Mail/ref/Configurations.props b/src/System.Net.Mail/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Mail/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Mail/src/Configurations.props b/src/System.Net.Mail/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
--- a/src/System.Net.Mail/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Mail/tests/Functional/Configurations.props b/src/System.Net.Mail/tests/Functional/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.Mail/tests/Functional/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Mail/tests/Unit/Configurations.props b/src/System.Net.Mail/tests/Unit/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Net.Mail/tests/Unit/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.NameResolution/Directory.Build.props b/src/System.Net.NameResolution/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.NameResolution/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NameResolution/ref/Configurations.props b/src/System.Net.NameResolution/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.NameResolution/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.NameResolution/src/Configurations.props b/src/System.Net.NameResolution/src/Configurations.props
index bbb5be814ea2..201076ca67cd 100644
--- a/src/System.Net.NameResolution/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props b/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props
index f333d20c1aaa..ccb76c51f42b 100644
--- a/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.NameResolution/tests/PalTests/Configurations.props b/src/System.Net.NameResolution/tests/PalTests/Configurations.props
index 1040c9ba37f0..e9f658c09911 100644
--- a/src/System.Net.NameResolution/tests/PalTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.NameResolution/tests/UnitTests/Configurations.props b/src/System.Net.NameResolution/tests/UnitTests/Configurations.props
index 1040c9ba37f0..e9f658c09911 100644
--- a/src/System.Net.NameResolution/tests/UnitTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.NetworkInformation/Directory.Build.props b/src/System.Net.NetworkInformation/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Net.NetworkInformation/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.NetworkInformation/ref/Configurations.props b/src/System.Net.NetworkInformation/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.NetworkInformation/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.NetworkInformation/src/Configurations.props b/src/System.Net.NetworkInformation/src/Configurations.props
index 92e64ebc19b5..38ef8a4972d9 100644
--- a/src/System.Net.NetworkInformation/src/Configurations.props
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diff --git a/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props b/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Ping/Directory.Build.props b/src/System.Net.Ping/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.Ping/Directory.Build.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Ping/ref/Configurations.props b/src/System.Net.Ping/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Ping/ref/Configurations.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Ping/src/Configurations.props b/src/System.Net.Ping/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
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diff --git a/src/System.Net.Ping/tests/FunctionalTests/Configurations.props b/src/System.Net.Ping/tests/FunctionalTests/Configurations.props
index cfc57211a43f..fc09ee113b7f 100644
--- a/src/System.Net.Ping/tests/FunctionalTests/Configurations.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Primitives/Directory.Build.props b/src/System.Net.Primitives/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.Primitives/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Primitives/ref/Configurations.props b/src/System.Net.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Primitives/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Primitives/src/Configurations.props b/src/System.Net.Primitives/src/Configurations.props
index 1d686837b0ac..969a8d8272d0 100644
--- a/src/System.Net.Primitives/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props b/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
index b0d8c5c32a7e..2f8b980c686e 100644
--- a/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.Net.Primitives/tests/PalTests/Configurations.props b/src/System.Net.Primitives/tests/PalTests/Configurations.props
index 17d3231f8e68..20e7ab532f10 100644
--- a/src/System.Net.Primitives/tests/PalTests/Configurations.props
+++ b/src/System.Net.Primitives/tests/PalTests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.Net.Primitives/tests/PerformanceTests/Configurations.props b/src/System.Net.Primitives/tests/PerformanceTests/Configurations.props
index ebe64f0dc48f..a5b0175f7d8d 100644
--- a/src/System.Net.Primitives/tests/PerformanceTests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Primitives/tests/UnitTests/Configurations.props b/src/System.Net.Primitives/tests/UnitTests/Configurations.props
index 1040c9ba37f0..e9f658c09911 100644
--- a/src/System.Net.Primitives/tests/UnitTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Requests/Directory.Build.props b/src/System.Net.Requests/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.Requests/Directory.Build.props
+++ b/src/System.Net.Requests/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Requests/ref/Configurations.props b/src/System.Net.Requests/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Requests/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Requests/src/Configurations.props b/src/System.Net.Requests/src/Configurations.props
index 62eb1c477680..f612570ae28e 100644
--- a/src/System.Net.Requests/src/Configurations.props
+++ b/src/System.Net.Requests/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Requests/tests/Configurations.props b/src/System.Net.Requests/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.Requests/tests/Configurations.props
+++ b/src/System.Net.Requests/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Security/Directory.Build.props b/src/System.Net.Security/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.Security/Directory.Build.props
+++ b/src/System.Net.Security/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Security/ref/Configurations.props b/src/System.Net.Security/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Security/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Security/src/Configurations.props b/src/System.Net.Security/src/Configurations.props
index 05d3ab66c3df..0afd1b0fe384 100644
--- a/src/System.Net.Security/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.Security/tests/FunctionalTests/Configurations.props b/src/System.Net.Security/tests/FunctionalTests/Configurations.props
index 6e69be526f72..e0bbc7aa03ae 100644
--- a/src/System.Net.Security/tests/FunctionalTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Security/tests/UnitTests/Configurations.props b/src/System.Net.Security/tests/UnitTests/Configurations.props
index 7bdd3a170b90..7064b29a2c05 100644
--- a/src/System.Net.Security/tests/UnitTests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.ServicePoint/Directory.Build.props b/src/System.Net.ServicePoint/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Net.ServicePoint/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.ServicePoint/ref/Configurations.props b/src/System.Net.ServicePoint/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.ServicePoint/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.ServicePoint/src/Configurations.props b/src/System.Net.ServicePoint/src/Configurations.props
index d8cfd389a8f6..aca7cfa92700 100644
--- a/src/System.Net.ServicePoint/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.ServicePoint/tests/Configurations.props b/src/System.Net.ServicePoint/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Net.ServicePoint/tests/Configurations.props
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diff --git a/src/System.Net.Sockets/Directory.Build.props b/src/System.Net.Sockets/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Net.Sockets/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Sockets/ref/Configurations.props b/src/System.Net.Sockets/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.Sockets/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Sockets/src/Configurations.props b/src/System.Net.Sockets/src/Configurations.props
index 1d686837b0ac..969a8d8272d0 100644
--- a/src/System.Net.Sockets/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Sockets/tests/FunctionalTests/Configurations.props b/src/System.Net.Sockets/tests/FunctionalTests/Configurations.props
index eddfd3a9acc5..54d39c39e8c4 100644
--- a/src/System.Net.Sockets/tests/FunctionalTests/Configurations.props
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diff --git a/src/System.Net.Sockets/tests/ManualPerformanceTests/Configurations.props b/src/System.Net.Sockets/tests/ManualPerformanceTests/Configurations.props
index f333d20c1aaa..ccb76c51f42b 100644
--- a/src/System.Net.Sockets/tests/ManualPerformanceTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.Sockets/tests/Performance/Configurations.props b/src/System.Net.Sockets/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Net.Sockets/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Net.WebClient/Directory.Build.props b/src/System.Net.WebClient/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Net.WebClient/Directory.Build.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebClient/ref/Configurations.props b/src/System.Net.WebClient/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.WebClient/ref/Configurations.props
+++ b/src/System.Net.WebClient/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebClient/src/Configurations.props b/src/System.Net.WebClient/src/Configurations.props
index d8cfd389a8f6..aca7cfa92700 100644
--- a/src/System.Net.WebClient/src/Configurations.props
+++ b/src/System.Net.WebClient/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.WebClient/tests/Configurations.props b/src/System.Net.WebClient/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.WebClient/tests/Configurations.props
+++ b/src/System.Net.WebClient/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebHeaderCollection/Directory.Build.props b/src/System.Net.WebHeaderCollection/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.WebHeaderCollection/Directory.Build.props
+++ b/src/System.Net.WebHeaderCollection/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebHeaderCollection/ref/Configurations.props b/src/System.Net.WebHeaderCollection/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.WebHeaderCollection/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebHeaderCollection/src/Configurations.props b/src/System.Net.WebHeaderCollection/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Net.WebHeaderCollection/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebHeaderCollection/tests/Configurations.props b/src/System.Net.WebHeaderCollection/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.WebHeaderCollection/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebProxy/Directory.Build.props b/src/System.Net.WebProxy/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Net.WebProxy/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebProxy/ref/Configurations.props b/src/System.Net.WebProxy/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.WebProxy/ref/Configurations.props
+++ b/src/System.Net.WebProxy/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.WebProxy/src/Configurations.props b/src/System.Net.WebProxy/src/Configurations.props
index d8cfd389a8f6..aca7cfa92700 100644
--- a/src/System.Net.WebProxy/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.WebProxy/tests/Configurations.props b/src/System.Net.WebProxy/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.WebProxy/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.WebSockets.Client/Directory.Build.props b/src/System.Net.WebSockets.Client/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.WebSockets.Client/Directory.Build.props
+++ b/src/System.Net.WebSockets.Client/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets.Client/ref/Configurations.props b/src/System.Net.WebSockets.Client/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.WebSockets.Client/ref/Configurations.props
+++ b/src/System.Net.WebSockets.Client/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Net.WebSockets.Client/src/Configurations.props b/src/System.Net.WebSockets.Client/src/Configurations.props
index 1d686837b0ac..969a8d8272d0 100644
--- a/src/System.Net.WebSockets.Client/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets.Client/tests/Configurations.props b/src/System.Net.WebSockets.Client/tests/Configurations.props
index eddfd3a9acc5..54d39c39e8c4 100644
--- a/src/System.Net.WebSockets.Client/tests/Configurations.props
+++ b/src/System.Net.WebSockets.Client/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props b/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj b/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
index fad1f77d20b4..ccfe78e6bbcb 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
+++ b/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Net.WebSockets.WebSocketProtocol.csproj">
diff --git a/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
+++ b/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props
index f598331290c3..f0ab430a4e86 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props
+++ b/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props
+++ b/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Net.WebSockets/Directory.Build.props b/src/System.Net.WebSockets/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Net.WebSockets/Directory.Build.props
+++ b/src/System.Net.WebSockets/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Net.WebSockets/ref/Configurations.props b/src/System.Net.WebSockets/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Net.WebSockets/ref/Configurations.props
+++ b/src/System.Net.WebSockets/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Net.WebSockets/src/Configurations.props b/src/System.Net.WebSockets/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Net.WebSockets/src/Configurations.props
+++ b/src/System.Net.WebSockets/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Net.WebSockets/tests/Configurations.props b/src/System.Net.WebSockets/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Net.WebSockets/tests/Configurations.props
+++ b/src/System.Net.WebSockets/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Numerics.Tensors/Directory.Build.props b/src/System.Numerics.Tensors/Directory.Build.props
index 01a922a178fb..ef99c501550c 100644
--- a/src/System.Numerics.Tensors/Directory.Build.props
+++ b/src/System.Numerics.Tensors/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>0.2.0.0</AssemblyVersion>
diff --git a/src/System.Numerics.Tensors/pkg/System.Numerics.Tensors.pkgproj b/src/System.Numerics.Tensors/pkg/System.Numerics.Tensors.pkgproj
index 4f86d9a8dfa1..9eb0b2b41d46 100644
--- a/src/System.Numerics.Tensors/pkg/System.Numerics.Tensors.pkgproj
+++ b/src/System.Numerics.Tensors/pkg/System.Numerics.Tensors.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <!-- we need to be supported on pre-nuget-3 platforms (Dev12, Dev11, etc) -->
diff --git a/src/System.Numerics.Tensors/ref/Configurations.props b/src/System.Numerics.Tensors/ref/Configurations.props
index 0b86c0812885..fad448931930 100644
--- a/src/System.Numerics.Tensors/ref/Configurations.props
+++ b/src/System.Numerics.Tensors/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Numerics.Tensors/src/Configurations.props b/src/System.Numerics.Tensors/src/Configurations.props
index 0b86c0812885..fad448931930 100644
--- a/src/System.Numerics.Tensors/src/Configurations.props
+++ b/src/System.Numerics.Tensors/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Numerics.Tensors/tests/Configurations.props b/src/System.Numerics.Tensors/tests/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Numerics.Tensors/tests/Configurations.props
+++ b/src/System.Numerics.Tensors/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Numerics.Vectors.WindowsRuntime/Directory.Build.props b/src/System.Numerics.Vectors.WindowsRuntime/Directory.Build.props
index 9fdb581abb34..410d5b1a0641 100644
--- a/src/System.Numerics.Vectors.WindowsRuntime/Directory.Build.props
+++ b/src/System.Numerics.Vectors.WindowsRuntime/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Numerics.Vectors.WindowsRuntime/src/Configurations.props b/src/System.Numerics.Vectors.WindowsRuntime/src/Configurations.props
index 1111c322a148..163d9a715ce9 100644
--- a/src/System.Numerics.Vectors.WindowsRuntime/src/Configurations.props
+++ b/src/System.Numerics.Vectors.WindowsRuntime/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       uap-Windows_NT;
diff --git a/src/System.Numerics.Vectors/Directory.Build.props b/src/System.Numerics.Vectors/Directory.Build.props
index 581e8181f20f..08513423087e 100644
--- a/src/System.Numerics.Vectors/Directory.Build.props
+++ b/src/System.Numerics.Vectors/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.5.0</AssemblyVersion>
diff --git a/src/System.Numerics.Vectors/pkg/System.Numerics.Vectors.pkgproj b/src/System.Numerics.Vectors/pkg/System.Numerics.Vectors.pkgproj
index a2b8ce8cfe3a..c9deb74d0be9 100644
--- a/src/System.Numerics.Vectors/pkg/System.Numerics.Vectors.pkgproj
+++ b/src/System.Numerics.Vectors/pkg/System.Numerics.Vectors.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <!-- we need to be supported on pre-nuget-3 platforms (Dev12, Dev11, etc) -->
diff --git a/src/System.Numerics.Vectors/ref/Configurations.props b/src/System.Numerics.Vectors/ref/Configurations.props
index ed7d2db187fa..a7358e8ad86d 100644
--- a/src/System.Numerics.Vectors/ref/Configurations.props
+++ b/src/System.Numerics.Vectors/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Numerics.Vectors/src/Configurations.props b/src/System.Numerics.Vectors/src/Configurations.props
index 2582e0ac0589..336d4b2859cb 100644
--- a/src/System.Numerics.Vectors/src/Configurations.props
+++ b/src/System.Numerics.Vectors/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Numerics.Vectors/tests/Configurations.props b/src/System.Numerics.Vectors/tests/Configurations.props
index 64aed1a5ce20..0ca1bfc137b4 100644
--- a/src/System.Numerics.Vectors/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Numerics.Vectors/tests/Performance/Configurations.props b/src/System.Numerics.Vectors/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Numerics.Vectors/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.ObjectModel/Directory.Build.props b/src/System.ObjectModel/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.ObjectModel/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ObjectModel/ref/Configurations.props b/src/System.ObjectModel/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.ObjectModel/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.ObjectModel/src/Configurations.props b/src/System.ObjectModel/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.ObjectModel/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ObjectModel/tests/Configurations.props b/src/System.ObjectModel/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.ObjectModel/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Private.DataContractSerialization/Directory.Build.props b/src/System.Private.DataContractSerialization/Directory.Build.props
index 776b52317d99..b0fdeec2af57 100644
--- a/src/System.Private.DataContractSerialization/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.DataContractSerialization/src/Configurations.props b/src/System.Private.DataContractSerialization/src/Configurations.props
index 0383eafcba1b..390180bc49a1 100644
--- a/src/System.Private.DataContractSerialization/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.Reflection.Metadata.Ecma335/Directory.Build.props b/src/System.Private.Reflection.Metadata.Ecma335/Directory.Build.props
index b9ac4acd233b..8dbecf0f0215 100644
--- a/src/System.Private.Reflection.Metadata.Ecma335/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.Reflection.Metadata.Ecma335/src/Configurations.props b/src/System.Private.Reflection.Metadata.Ecma335/src/Configurations.props
index e6781ac0906b..281ec9c3af9c 100644
--- a/src/System.Private.Reflection.Metadata.Ecma335/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Private.Uri/Directory.Build.props b/src/System.Private.Uri/Directory.Build.props
index 6c73013267d1..4d8e6436a1d7 100644
--- a/src/System.Private.Uri/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Private.Uri/src/Configurations.props b/src/System.Private.Uri/src/Configurations.props
index 83ff3176788a..5dc44e1ea808 100644
--- a/src/System.Private.Uri/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Private.Uri/tests/ExtendedFunctionalTests/Configurations.props b/src/System.Private.Uri/tests/ExtendedFunctionalTests/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Private.Uri/tests/ExtendedFunctionalTests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Private.Uri/tests/FunctionalTests/Configurations.props b/src/System.Private.Uri/tests/FunctionalTests/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Private.Uri/tests/FunctionalTests/Configurations.props
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diff --git a/src/System.Private.Uri/tests/UnitTests/Configurations.props b/src/System.Private.Uri/tests/UnitTests/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Private.Uri/tests/UnitTests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.Xml.Linq/Directory.Build.props b/src/System.Private.Xml.Linq/Directory.Build.props
index fc108ac22aa2..7db37403d3d8 100644
--- a/src/System.Private.Xml.Linq/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.Xml.Linq/src/Configurations.props b/src/System.Private.Xml.Linq/src/Configurations.props
index 7bdbc4586f7e..f06f40920f8f 100644
--- a/src/System.Private.Xml.Linq/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props b/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props b/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/events/Configurations.props b/src/System.Private.Xml.Linq/tests/events/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml.Linq/tests/events/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/events/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/misc/Configurations.props b/src/System.Private.Xml.Linq/tests/misc/Configurations.props
index 81ec505f6bfb..57b5cf7f917d 100644
--- a/src/System.Private.Xml.Linq/tests/misc/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/misc/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props b/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
index 81ec505f6bfb..57b5cf7f917d 100644
--- a/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/Directory.Build.props b/src/System.Private.Xml/Directory.Build.props
index fc108ac22aa2..7db37403d3d8 100644
--- a/src/System.Private.Xml/Directory.Build.props
+++ b/src/System.Private.Xml/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Private.Xml/src/Configurations.props b/src/System.Private.Xml/src/Configurations.props
index afd7b401c08b..cab746f97ba8 100644
--- a/src/System.Private.Xml/src/Configurations.props
+++ b/src/System.Private.Xml/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Private.Xml/tests/Misc/Configurations.props b/src/System.Private.Xml/tests/Misc/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Misc/Configurations.props
+++ b/src/System.Private.Xml/tests/Misc/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props b/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props b/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props b/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props b/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props b/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props b/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props b/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props b/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
+++ b/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props b/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props b/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props b/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlConvert/Configurations.props b/src/System.Private.Xml/tests/XmlConvert/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlConvert/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlConvert/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlDocument/Configurations.props b/src/System.Private.Xml/tests/XmlDocument/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlDocument/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props b/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/System.Xml.XmlNodeReader.Tests.csproj b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/System.Xml.XmlNodeReader.Tests.csproj
index 934816b20e6e..46217ffee7d7 100644
--- a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/System.Xml.XmlNodeReader.Tests.csproj
+++ b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/System.Xml.XmlNodeReader.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$(CommonTestPath)\Tests.props" />
   <PropertyGroup>
     <ProjectGuid>{6C6F323D-054E-4723-9DEA-1C5E1E45DF88}</ProjectGuid>
diff --git a/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props b/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props b/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props b/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props b/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/System.Xml.XmlResolver.Tests.csproj b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/System.Xml.XmlResolver.Tests.csproj
index ab9d63c02e2a..442339ebd95b 100644
--- a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/System.Xml.XmlResolver.Tests.csproj
+++ b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/System.Xml.XmlResolver.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$(CommonTestPath)\Tests.props" />
   <PropertyGroup>
     <ProjectGuid>{F011A6F5-BA48-4F8D-A20F-79CCE01CDE0E}</ProjectGuid>
diff --git a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
index bd930d0f901d..840f3a0b260b 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
index c2acc1495118..283e59a7f7bc 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlWriter/Configurations.props b/src/System.Private.Xml/tests/XmlWriter/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/XmlWriter/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlWriter/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props b/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
index b40e1de4220a..782a68050ce2 100644
--- a/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netfx;
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props b/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props
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 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Reflection.Context/Directory.Build.props b/src/System.Reflection.Context/Directory.Build.props
index 926696157b0f..c8455b0cc525 100644
--- a/src/System.Reflection.Context/Directory.Build.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj b/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj
index 27308bbcab7c..4998968ebe68 100644
--- a/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj
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diff --git a/src/System.Reflection.Context/ref/Configurations.props b/src/System.Reflection.Context/ref/Configurations.props
index a66f1edba4a0..cf9ba1f9f43e 100644
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diff --git a/src/System.Reflection.Context/src/Configurations.props b/src/System.Reflection.Context/src/Configurations.props
index 0b789f959bad..99303c077969 100644
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diff --git a/src/System.Reflection.Context/tests/Configurations.props b/src/System.Reflection.Context/tests/Configurations.props
index 5e52d60de3ca..0bc2a7e887e2 100644
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diff --git a/src/System.Reflection.DispatchProxy/Directory.Build.props b/src/System.Reflection.DispatchProxy/Directory.Build.props
index 550855ef8232..7fb3501615a7 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj b/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj
index 7f87457bf147..ee8ba88e9619 100644
--- a/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj
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diff --git a/src/System.Reflection.DispatchProxy/ref/Configurations.props b/src/System.Reflection.DispatchProxy/ref/Configurations.props
index f6dd5314321f..222b0534e7ca 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.DispatchProxy/src/Configurations.props b/src/System.Reflection.DispatchProxy/src/Configurations.props
index 768ff70e4748..8edb5d5db907 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.DispatchProxy/tests/Configurations.props b/src/System.Reflection.DispatchProxy/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
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@@ -1,5 +1,5 @@
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index b6f0e05d2fce..a58102bb0272 100644
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index b49484ce1b6b..c2bf001a3b7f 100644
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index 2eb107c49387..032b6f7b2283 100644
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index 280114ac1948..d2362b631421 100644
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diff --git a/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props b/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props
index 2845c11c541d..323c11cf6937 100644
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index b6f0e05d2fce..a58102bb0272 100644
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index 478b77449c77..a26c53da0734 100644
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index 2eb107c49387..032b6f7b2283 100644
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index a862d3e11754..8d98c85a083c 100644
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diff --git a/src/System.Reflection.Emit.Lightweight/tests/Configurations.props b/src/System.Reflection.Emit.Lightweight/tests/Configurations.props
index 2845c11c541d..323c11cf6937 100644
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index c043089f93ad..2383171cb6a2 100644
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index fea194fbc6f9..4ef69d79fbc4 100644
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index 1b64a6e44dd5..096a5832c35d 100644
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diff --git a/src/System.Reflection.Emit/src/Configurations.props b/src/System.Reflection.Emit/src/Configurations.props
index d98d0320961a..130b3ba001a4 100644
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diff --git a/src/System.Reflection.Emit/tests/Configurations.props b/src/System.Reflection.Emit/tests/Configurations.props
index 2845c11c541d..323c11cf6937 100644
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diff --git a/src/System.Reflection.Extensions/Directory.Build.props b/src/System.Reflection.Extensions/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.Extensions/ref/Configurations.props b/src/System.Reflection.Extensions/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Reflection.Extensions/src/Configurations.props b/src/System.Reflection.Extensions/src/Configurations.props
index 5c3fd682319c..8c16b2d185da 100644
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diff --git a/src/System.Reflection.Extensions/tests/Configurations.props b/src/System.Reflection.Extensions/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.Reflection.Metadata/Directory.Build.props b/src/System.Reflection.Metadata/Directory.Build.props
index 81d5e539e232..a311eebbbad0 100644
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diff --git a/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj b/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj
index f1b8c12762b6..428d66c52f20 100644
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index e9089f9d85c9..b1b9786709af 100644
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diff --git a/src/System.Reflection.Metadata/src/Configurations.props b/src/System.Reflection.Metadata/src/Configurations.props
index e9089f9d85c9..b1b9786709af 100644
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diff --git a/src/System.Reflection.Metadata/tests/Configurations.props b/src/System.Reflection.Metadata/tests/Configurations.props
index dd9ac0654d16..361031dde464 100644
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diff --git a/src/System.Reflection.MetadataLoadContext/Directory.Build.props b/src/System.Reflection.MetadataLoadContext/Directory.Build.props
index 6be79232c52e..b5b48f598332 100644
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index 11025472d9ad..0632fe32f5e9 100644
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diff --git a/src/System.Reflection.MetadataLoadContext/ref/Configurations.props b/src/System.Reflection.MetadataLoadContext/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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diff --git a/src/System.Reflection.MetadataLoadContext/src/Configurations.props b/src/System.Reflection.MetadataLoadContext/src/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/System.Reflection.MetadataLoadContext/src/Configurations.props
+++ b/src/System.Reflection.MetadataLoadContext/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Reflection.MetadataLoadContext/src/System.Reflection.MetadataLoadContext.csproj b/src/System.Reflection.MetadataLoadContext/src/System.Reflection.MetadataLoadContext.csproj
index b378e4c3172e..4dd8579990d4 100644
--- a/src/System.Reflection.MetadataLoadContext/src/System.Reflection.MetadataLoadContext.csproj
+++ b/src/System.Reflection.MetadataLoadContext/src/System.Reflection.MetadataLoadContext.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <ProjectGuid>{DBB18588-DD89-4F41-9852-484FD4726F0F}</ProjectGuid>
     <AssemblyName>System.Reflection.MetadataLoadContext</AssemblyName>
diff --git a/src/System.Reflection.MetadataLoadContext/tests/Configurations.props b/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
+++ b/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Reflection.Primitives/Directory.Build.props b/src/System.Reflection.Primitives/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Reflection.Primitives/Directory.Build.props
+++ b/src/System.Reflection.Primitives/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Reflection.Primitives/ref/Configurations.props b/src/System.Reflection.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Reflection.Primitives/ref/Configurations.props
+++ b/src/System.Reflection.Primitives/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Reflection.Primitives/src/Configurations.props b/src/System.Reflection.Primitives/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Reflection.Primitives/src/Configurations.props
+++ b/src/System.Reflection.Primitives/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Reflection.TypeExtensions/Directory.Build.props b/src/System.Reflection.TypeExtensions/Directory.Build.props
index 50710c16afe5..80ffe16c4c29 100644
--- a/src/System.Reflection.TypeExtensions/Directory.Build.props
+++ b/src/System.Reflection.TypeExtensions/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj b/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
index 0bf70d9f8c44..76c691dfe046 100644
--- a/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
+++ b/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection.TypeExtensions/ref/Configurations.props b/src/System.Reflection.TypeExtensions/ref/Configurations.props
index 6308641bd9aa..2a7570a4d9b5 100644
--- a/src/System.Reflection.TypeExtensions/ref/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Reflection.TypeExtensions/src/Configurations.props b/src/System.Reflection.TypeExtensions/src/Configurations.props
index 6d23c8289992..530a4ae906af 100644
--- a/src/System.Reflection.TypeExtensions/src/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection.TypeExtensions/tests/Configurations.props b/src/System.Reflection.TypeExtensions/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Reflection.TypeExtensions/tests/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Reflection/Directory.Build.props b/src/System.Reflection/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Reflection/Directory.Build.props
+++ b/src/System.Reflection/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/ref/Configurations.props b/src/System.Reflection/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Reflection/ref/Configurations.props
+++ b/src/System.Reflection/ref/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection/src/Configurations.props b/src/System.Reflection/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Reflection/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/AssemblyVersion/Configurations.props b/src/System.Reflection/tests/AssemblyVersion/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Reflection/tests/AssemblyVersion/Configurations.props
+++ b/src/System.Reflection/tests/AssemblyVersion/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/Configurations.props b/src/System.Reflection/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Reflection/tests/Configurations.props
+++ b/src/System.Reflection/tests/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Reflection/tests/CoreCLR/Configurations.props b/src/System.Reflection/tests/CoreCLR/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Reflection/tests/CoreCLR/Configurations.props
+++ b/src/System.Reflection/tests/CoreCLR/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props b/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
+++ b/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/TestAssembly/Configurations.props b/src/System.Reflection/tests/TestAssembly/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Reflection/tests/TestAssembly/Configurations.props
+++ b/src/System.Reflection/tests/TestAssembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Reflection/tests/TestExe/Configurations.props b/src/System.Reflection/tests/TestExe/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Reflection/tests/TestExe/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/UnloadableAssembly/Configurations.props b/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
+++ b/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Resources.Reader/Directory.Build.props b/src/System.Resources.Reader/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Resources.Reader/Directory.Build.props
+++ b/src/System.Resources.Reader/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Resources.Reader/ref/Configurations.props b/src/System.Resources.Reader/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Resources.Reader/ref/Configurations.props
+++ b/src/System.Resources.Reader/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Resources.Reader/src/Configurations.props b/src/System.Resources.Reader/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Resources.Reader/src/Configurations.props
+++ b/src/System.Resources.Reader/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.Reader/tests/Configurations.props b/src/System.Resources.Reader/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Resources.Reader/tests/Configurations.props
+++ b/src/System.Resources.Reader/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.ResourceManager/Directory.Build.props b/src/System.Resources.ResourceManager/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Resources.ResourceManager/Directory.Build.props
+++ b/src/System.Resources.ResourceManager/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Resources.ResourceManager/ref/Configurations.props b/src/System.Resources.ResourceManager/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Resources.ResourceManager/ref/Configurations.props
+++ b/src/System.Resources.ResourceManager/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.ResourceManager/src/Configurations.props b/src/System.Resources.ResourceManager/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Resources.ResourceManager/src/Configurations.props
+++ b/src/System.Resources.ResourceManager/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.ResourceManager/tests/Configurations.props b/src/System.Resources.ResourceManager/tests/Configurations.props
index b63c2c5ee82f..68fc5c0f768d 100644
--- a/src/System.Resources.ResourceManager/tests/Configurations.props
+++ b/src/System.Resources.ResourceManager/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.Writer/Directory.Build.props b/src/System.Resources.Writer/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Resources.Writer/Directory.Build.props
+++ b/src/System.Resources.Writer/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Resources.Writer/ref/Configurations.props b/src/System.Resources.Writer/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Resources.Writer/ref/Configurations.props
+++ b/src/System.Resources.Writer/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netcoreapp;
diff --git a/src/System.Resources.Writer/src/Configurations.props b/src/System.Resources.Writer/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Resources.Writer/src/Configurations.props
+++ b/src/System.Resources.Writer/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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     <BuildConfigurations>
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diff --git a/src/System.Resources.Writer/tests/Configurations.props b/src/System.Resources.Writer/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Resources.Writer/tests/Configurations.props
+++ b/src/System.Resources.Writer/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Runtime.Caching/Directory.Build.props b/src/System.Runtime.Caching/Directory.Build.props
index 7c0fa810dcce..7b2836163cb7 100644
--- a/src/System.Runtime.Caching/Directory.Build.props
+++ b/src/System.Runtime.Caching/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj b/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
index f816ab0d8932..2eec066552c3 100644
--- a/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
+++ b/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
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diff --git a/src/System.Runtime.Caching/ref/Configurations.props b/src/System.Runtime.Caching/ref/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Runtime.Caching/ref/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.Caching/src/Configurations.props b/src/System.Runtime.Caching/src/Configurations.props
index f1bf1fb00dd4..c70967e8829b 100644
--- a/src/System.Runtime.Caching/src/Configurations.props
+++ b/src/System.Runtime.Caching/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Runtime.Caching/tests/Configurations.props b/src/System.Runtime.Caching/tests/Configurations.props
index 237253623aea..206336e6d841 100644
--- a/src/System.Runtime.Caching/tests/Configurations.props
+++ b/src/System.Runtime.Caching/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props b/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
index b06ba557398f..d0daf01f8f90 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj b/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj
index 4d3f85a0ce95..8219ea206436 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <ItemGroup>
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diff --git a/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
index 84da57e60d75..975d55ecff8d 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.0;
diff --git a/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
index 2a68e751ff41..597ef15f438e 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0;
diff --git a/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
index 78953dfc8851..1cd8ced0f64f 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props b/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
+++ b/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/Directory.Build.props b/src/System.Runtime.Extensions/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Runtime.Extensions/Directory.Build.props
+++ b/src/System.Runtime.Extensions/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Extensions/ref/Configurations.props b/src/System.Runtime.Extensions/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Extensions/ref/Configurations.props
+++ b/src/System.Runtime.Extensions/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Extensions/src/Configurations.props b/src/System.Runtime.Extensions/src/Configurations.props
index e92ae794e599..a2b28a2d7864 100644
--- a/src/System.Runtime.Extensions/src/Configurations.props
+++ b/src/System.Runtime.Extensions/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props b/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/tests/Configurations.props b/src/System.Runtime.Extensions/tests/Configurations.props
index 99659fc4c482..20850ef0b7af 100644
--- a/src/System.Runtime.Extensions/tests/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime.Extensions/tests/Performance/Configurations.props b/src/System.Runtime.Extensions/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Extensions/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Extensions/tests/TestApp/Configurations.props b/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props b/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props b/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Handles/Directory.Build.props b/src/System.Runtime.Handles/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Runtime.Handles/Directory.Build.props
+++ b/src/System.Runtime.Handles/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Handles/ref/Configurations.props b/src/System.Runtime.Handles/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Handles/ref/Configurations.props
+++ b/src/System.Runtime.Handles/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Handles/src/Configurations.props b/src/System.Runtime.Handles/src/Configurations.props
index dcb70afd11c0..74ab6cde0598 100644
--- a/src/System.Runtime.Handles/src/Configurations.props
+++ b/src/System.Runtime.Handles/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Handles/tests/Configurations.props b/src/System.Runtime.Handles/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Handles/tests/Configurations.props
+++ b/src/System.Runtime.Handles/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props b/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
index f1692a145094..761e10102c4d 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
index f11a8087a184..af6024e26b1e 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
index 56809fbdcb4f..c4f429f8d5f8 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props b/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
index 1779095e5fa1..b56a613ad357 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
index 1779095e5fa1..b56a613ad357 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices/Directory.Build.props b/src/System.Runtime.InteropServices/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Runtime.InteropServices/Directory.Build.props
+++ b/src/System.Runtime.InteropServices/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime.InteropServices/ref/Configurations.props b/src/System.Runtime.InteropServices/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.InteropServices/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices/src/Configurations.props b/src/System.Runtime.InteropServices/src/Configurations.props
index 4b4fb25252b2..5f04e4fc0a36 100644
--- a/src/System.Runtime.InteropServices/src/Configurations.props
+++ b/src/System.Runtime.InteropServices/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.InteropServices/tests/Configurations.props b/src/System.Runtime.InteropServices/tests/Configurations.props
index a78d4b982c28..87d84f9932e8 100644
--- a/src/System.Runtime.InteropServices/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Intrinsics/Directory.Build.props b/src/System.Runtime.Intrinsics/Directory.Build.props
index dab9c647d861..8a0cd26d61e3 100644
--- a/src/System.Runtime.Intrinsics/Directory.Build.props
+++ b/src/System.Runtime.Intrinsics/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Runtime.Intrinsics/ref/Configurations.props b/src/System.Runtime.Intrinsics/ref/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Runtime.Intrinsics/ref/Configurations.props
+++ b/src/System.Runtime.Intrinsics/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Intrinsics/src/Configurations.props b/src/System.Runtime.Intrinsics/src/Configurations.props
index c096da2b2731..797a012591bf 100644
--- a/src/System.Runtime.Intrinsics/src/Configurations.props
+++ b/src/System.Runtime.Intrinsics/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Loader/Directory.Build.props b/src/System.Runtime.Loader/Directory.Build.props
index afeaaa4ba4bc..4cb8b622783c 100644
--- a/src/System.Runtime.Loader/Directory.Build.props
+++ b/src/System.Runtime.Loader/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.0.0</AssemblyVersion>
diff --git a/src/System.Runtime.Loader/ref/Configurations.props b/src/System.Runtime.Loader/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Loader/ref/Configurations.props
+++ b/src/System.Runtime.Loader/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Loader/src/Configurations.props b/src/System.Runtime.Loader/src/Configurations.props
index afd7b401c08b..cab746f97ba8 100644
--- a/src/System.Runtime.Loader/src/Configurations.props
+++ b/src/System.Runtime.Loader/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Loader/tests/Configurations.props b/src/System.Runtime.Loader/tests/Configurations.props
index 553cfdafc472..8f23f6951c17 100644
--- a/src/System.Runtime.Loader/tests/Configurations.props
+++ b/src/System.Runtime.Loader/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props b/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
+++ b/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props b/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
+++ b/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Numerics/Directory.Build.props b/src/System.Runtime.Numerics/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Runtime.Numerics/Directory.Build.props
+++ b/src/System.Runtime.Numerics/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Numerics/ref/Configurations.props b/src/System.Runtime.Numerics/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Numerics/ref/Configurations.props
+++ b/src/System.Runtime.Numerics/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Numerics/src/Configurations.props b/src/System.Runtime.Numerics/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Runtime.Numerics/src/Configurations.props
+++ b/src/System.Runtime.Numerics/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Numerics/tests/Configurations.props b/src/System.Runtime.Numerics/tests/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/System.Runtime.Numerics/tests/Configurations.props
+++ b/src/System.Runtime.Numerics/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Numerics/tests/Performance/Configurations.props b/src/System.Runtime.Numerics/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Runtime.Numerics/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Numerics/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Formatters/Directory.Build.props b/src/System.Runtime.Serialization.Formatters/Directory.Build.props
index f1692a145094..761e10102c4d 100644
--- a/src/System.Runtime.Serialization.Formatters/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Formatters/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Formatters/ref/Configurations.props b/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Formatters/src/Configurations.props b/src/System.Runtime.Serialization.Formatters/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Runtime.Serialization.Formatters/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Formatters/tests/Configurations.props b/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
index f3e74d799156..1b4aa9f3ef14 100644
--- a/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- Needs netfx configuration per bug (dotnet/corefx #17575) so tests are actively running in desktop -->
     <BuildConfigurations>
diff --git a/src/System.Runtime.Serialization.Json/Directory.Build.props b/src/System.Runtime.Serialization.Json/Directory.Build.props
index 472e418a974b..c1845f50ce13 100644
--- a/src/System.Runtime.Serialization.Json/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Json/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Json/ref/Configurations.props b/src/System.Runtime.Serialization.Json/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Serialization.Json/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Json/src/Configurations.props b/src/System.Runtime.Serialization.Json/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Runtime.Serialization.Json/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Json/tests/Configurations.props b/src/System.Runtime.Serialization.Json/tests/Configurations.props
index bd930d0f901d..840f3a0b260b 100644
--- a/src/System.Runtime.Serialization.Json/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props b/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props b/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
index bd930d0f901d..840f3a0b260b 100644
--- a/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Primitives/Directory.Build.props b/src/System.Runtime.Serialization.Primitives/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Runtime.Serialization.Primitives/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Primitives/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Primitives/ref/Configurations.props b/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Primitives/src/Configurations.props b/src/System.Runtime.Serialization.Primitives/src/Configurations.props
index dcb70afd11c0..74ab6cde0598 100644
--- a/src/System.Runtime.Serialization.Primitives/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Primitives/tests/Configurations.props b/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/Directory.Build.props b/src/System.Runtime.Serialization.Xml/Directory.Build.props
index 50710c16afe5..80ffe16c4c29 100644
--- a/src/System.Runtime.Serialization.Xml/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Xml/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Xml/ref/Configurations.props b/src/System.Runtime.Serialization.Xml/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Runtime.Serialization.Xml/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Xml/src/Configurations.props b/src/System.Runtime.Serialization.Xml/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Runtime.Serialization.Xml/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
index 5ead6b58fee7..e49b4847e0e4 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;			
diff --git a/src/System.Runtime.Serialization.Xml/tests/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Configurations.props
index bd930d0f901d..840f3a0b260b 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
index bd930d0f901d..840f3a0b260b 100644
--- a/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
index 3df95f53bb40..fe20a40aad50 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj b/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
index 321a11345d70..f9d8afaca649 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Runtime.WindowsRuntime.UI.Xaml.csproj">
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
index 600231d88c49..f630dfb712d1 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
index 04701108e466..1e6db861ed83 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard1.1;
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
index 0cee6a527118..abc16980e0c8 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.WindowsRuntime/Directory.Build.props b/src/System.Runtime.WindowsRuntime/Directory.Build.props
index 8eda273b7201..ca529be690c6 100644
--- a/src/System.Runtime.WindowsRuntime/Directory.Build.props
+++ b/src/System.Runtime.WindowsRuntime/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
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diff --git a/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj b/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
index b309462133e2..ecd79acd6b16 100644
--- a/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
+++ b/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Runtime.WindowsRuntime/ref/Configurations.props b/src/System.Runtime.WindowsRuntime/ref/Configurations.props
index 600231d88c49..f630dfb712d1 100644
--- a/src/System.Runtime.WindowsRuntime/ref/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Runtime.WindowsRuntime/src/Configurations.props b/src/System.Runtime.WindowsRuntime/src/Configurations.props
index db1b5d367d52..c9c9f77a07a5 100644
--- a/src/System.Runtime.WindowsRuntime/src/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/src/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Runtime.WindowsRuntime/tests/Configurations.props b/src/System.Runtime.WindowsRuntime/tests/Configurations.props
index 0cee6a527118..abc16980e0c8 100644
--- a/src/System.Runtime.WindowsRuntime/tests/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime/Directory.Build.props b/src/System.Runtime/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Runtime/Directory.Build.props
+++ b/src/System.Runtime/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Runtime/ref/Configurations.props b/src/System.Runtime/ref/Configurations.props
index 83fbdb9cfd22..27b457ccfca8 100644
--- a/src/System.Runtime/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Runtime/src/Configurations.props b/src/System.Runtime/src/Configurations.props
index 4b4fb25252b2..5f04e4fc0a36 100644
--- a/src/System.Runtime/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Runtime/tests/Configurations.props b/src/System.Runtime/tests/Configurations.props
index 3d94bd9a7050..3f7ac601add1 100644
--- a/src/System.Runtime/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Runtime/tests/Performance/Configurations.props b/src/System.Runtime/tests/Performance/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Runtime/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props b/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Runtime/tests/TestLoadAssembly/Configurations.props b/src/System.Runtime/tests/TestLoadAssembly/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime/tests/TestLoadAssembly/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Runtime/tests/TestModule/Configurations.props b/src/System.Runtime/tests/TestModule/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Runtime/tests/TestModule/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.AccessControl/Directory.Build.props b/src/System.Security.AccessControl/Directory.Build.props
index 20a3fce93ad8..a781d6500860 100644
--- a/src/System.Security.AccessControl/Directory.Build.props
+++ b/src/System.Security.AccessControl/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj b/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj
index ba53facdb3a6..ffc07fccc9b0 100644
--- a/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.AccessControl/ref/Configurations.props b/src/System.Security.AccessControl/ref/Configurations.props
index 0a4aa1a48453..3b97ce9e9265 100644
--- a/src/System.Security.AccessControl/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.AccessControl/src/Configurations.props b/src/System.Security.AccessControl/src/Configurations.props
index 12ad8f6c281d..19263318eb19 100644
--- a/src/System.Security.AccessControl/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.AccessControl/tests/Configurations.props b/src/System.Security.AccessControl/tests/Configurations.props
index 7b470b3f4aef..f0841d79479c 100644
--- a/src/System.Security.AccessControl/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Claims/Directory.Build.props b/src/System.Security.Claims/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Security.Claims/Directory.Build.props
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@@ -1,5 +1,5 @@
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index c70175586371..5e830ff8b39b 100644
--- a/src/System.Security.Claims/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Claims/src/Configurations.props b/src/System.Security.Claims/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Security.Claims/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Claims/tests/Configurations.props b/src/System.Security.Claims/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Security.Claims/tests/Configurations.props
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@@ -1,5 +1,5 @@
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index eca2acc0bc8e..b811606aef16 100644
--- a/src/System.Security.Cryptography.Algorithms/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Algorithms/ref/Configurations.props b/src/System.Security.Cryptography.Algorithms/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Security.Cryptography.Algorithms/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Algorithms/src/Configurations.props b/src/System.Security.Cryptography.Algorithms/src/Configurations.props
index 057c22542f89..3304e32c470c 100644
--- a/src/System.Security.Cryptography.Algorithms/src/Configurations.props
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index 3237f9183ccf..1c6819ea87b3 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Cng/Directory.Build.props b/src/System.Security.Cryptography.Cng/Directory.Build.props
index fab4e1242692..73d5e234f9ce 100644
--- a/src/System.Security.Cryptography.Cng/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj b/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj
index af581943b979..2ba1de9f170e 100644
--- a/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.Cryptography.Cng/ref/Configurations.props b/src/System.Security.Cryptography.Cng/ref/Configurations.props
index 65b095e13874..1967fa135cc1 100644
--- a/src/System.Security.Cryptography.Cng/ref/Configurations.props
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diff --git a/src/System.Security.Cryptography.Cng/src/Configurations.props b/src/System.Security.Cryptography.Cng/src/Configurations.props
index ce793ebd6154..d736bc6de950 100644
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diff --git a/src/System.Security.Cryptography.Cng/tests/Configurations.props b/src/System.Security.Cryptography.Cng/tests/Configurations.props
index 62b8b4e96761..8f145ff56c6a 100644
--- a/src/System.Security.Cryptography.Cng/tests/Configurations.props
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diff --git a/src/System.Security.Cryptography.Csp/Directory.Build.props b/src/System.Security.Cryptography.Csp/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Security.Cryptography.Csp/Directory.Build.props
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@@ -1,5 +1,5 @@
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Security.Cryptography.Csp/src/Configurations.props b/src/System.Security.Cryptography.Csp/src/Configurations.props
index bbb5be814ea2..201076ca67cd 100644
--- a/src/System.Security.Cryptography.Csp/src/Configurations.props
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diff --git a/src/System.Security.Cryptography.Csp/tests/Configurations.props b/src/System.Security.Cryptography.Csp/tests/Configurations.props
index 3325a419e6f4..765a81ccf7b6 100644
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diff --git a/src/System.Security.Cryptography.Encoding/Directory.Build.props b/src/System.Security.Cryptography.Encoding/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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index c70175586371..5e830ff8b39b 100644
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diff --git a/src/System.Security.Cryptography.Encoding/src/Configurations.props b/src/System.Security.Cryptography.Encoding/src/Configurations.props
index 05d3ab66c3df..0afd1b0fe384 100644
--- a/src/System.Security.Cryptography.Encoding/src/Configurations.props
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diff --git a/src/System.Security.Cryptography.Encoding/tests/Configurations.props b/src/System.Security.Cryptography.Encoding/tests/Configurations.props
index cfc57211a43f..fc09ee113b7f 100644
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.Cryptography.OpenSsl/Directory.Build.props b/src/System.Security.Cryptography.OpenSsl/Directory.Build.props
index 71e2cc39cb46..ff313e503168 100644
--- a/src/System.Security.Cryptography.OpenSsl/Directory.Build.props
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj b/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj
index 2fe8a6c551b6..fa87ce4aeaa8 100644
--- a/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props b/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
+++ b/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.OpenSsl/src/Configurations.props b/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
index 71cac7fa93fc..a13b368120e5 100644
--- a/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
+++ b/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props b/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props
index 971d797958e7..1319d8c3379d 100644
--- a/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Pkcs/Directory.Build.props b/src/System.Security.Cryptography.Pkcs/Directory.Build.props
index 0749bb166fce..525d00c755d1 100644
--- a/src/System.Security.Cryptography.Pkcs/Directory.Build.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj b/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj
index 53b04c8edecb..82c5dcf1a553 100644
--- a/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj
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diff --git a/src/System.Security.Cryptography.Pkcs/ref/Configurations.props b/src/System.Security.Cryptography.Pkcs/ref/Configurations.props
index 494650312fa3..80d513c9b262 100644
--- a/src/System.Security.Cryptography.Pkcs/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Pkcs/src/Configurations.props b/src/System.Security.Cryptography.Pkcs/src/Configurations.props
index 236c9de3ee0a..d37504d27204 100644
--- a/src/System.Security.Cryptography.Pkcs/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.Cryptography.Pkcs/tests/Configurations.props b/src/System.Security.Cryptography.Pkcs/tests/Configurations.props
index 654bd4da0967..ab17932e27b9 100644
--- a/src/System.Security.Cryptography.Pkcs/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Security.Cryptography.Primitives/Directory.Build.props b/src/System.Security.Cryptography.Primitives/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Security.Cryptography.Primitives/Directory.Build.props
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@@ -1,5 +1,5 @@
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index c70175586371..5e830ff8b39b 100644
--- a/src/System.Security.Cryptography.Primitives/ref/Configurations.props
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diff --git a/src/System.Security.Cryptography.Primitives/src/Configurations.props b/src/System.Security.Cryptography.Primitives/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Security.Cryptography.Primitives/src/Configurations.props
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diff --git a/src/System.Security.Cryptography.Primitives/tests/Configurations.props b/src/System.Security.Cryptography.Primitives/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Security.Cryptography.Primitives/tests/Configurations.props
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diff --git a/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props b/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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index afbc21511c0c..38448e58868c 100644
--- a/src/System.Security.Cryptography.ProtectedData/Directory.Build.props
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diff --git a/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj b/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj
index 656e52ecd947..3453d54d37d8 100644
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diff --git a/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props b/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props
index cfd4fad4086c..5d3db5425432 100644
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diff --git a/src/System.Security.Cryptography.ProtectedData/src/Configurations.props b/src/System.Security.Cryptography.ProtectedData/src/Configurations.props
index 2b3ef9068408..06fa68df5e7f 100644
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diff --git a/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props b/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props
index 249c8c18b46b..b6f983f5d9de 100644
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diff --git a/src/System.Security.Cryptography.X509Certificates/Directory.Build.props b/src/System.Security.Cryptography.X509Certificates/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
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index c70175586371..5e830ff8b39b 100644
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index 05d3ab66c3df..0afd1b0fe384 100644
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diff --git a/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props b/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props
index f350faf89985..a314bca81003 100644
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index 6a43eb658bfc..fb0aa67477c5 100644
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index 845423411675..0cd3e337126b 100644
--- a/src/System.Security.Cryptography.Xml/pkg/System.Security.Cryptography.Xml.pkgproj
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index 9d81aad1a3ef..85b5581c03eb 100644
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index 2ee0430b0342..d791a96d76ad 100644
--- a/src/System.Security.Cryptography.Xml/src/Configurations.props
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index ea9ea79f787f..e56eedff2fb8 100644
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index 6a43eb658bfc..fb0aa67477c5 100644
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index bb1ff256acb4..1cd5f03577a2 100644
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index f7ef64451430..7f71376cd9ba 100644
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index 5983dcac0cd5..05b812f0f879 100644
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diff --git a/src/System.Security.Permissions/tests/Configurations.props b/src/System.Security.Permissions/tests/Configurations.props
index d9777d8275bc..86bac15cdaa7 100644
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index 20a3fce93ad8..a781d6500860 100644
--- a/src/System.Security.Principal.Windows/Directory.Build.props
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index 8ab1ae1cd2ca..fa491089a36e 100644
--- a/src/System.Security.Principal.Windows/pkg/System.Security.Principal.Windows.pkgproj
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index 4ff7d98c80aa..4b92e1fd40b6 100644
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diff --git a/src/System.Security.Principal.Windows/src/Configurations.props b/src/System.Security.Principal.Windows/src/Configurations.props
index d022d94deb57..5b6cb500e231 100644
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Principal.Windows/tests/Configurations.props b/src/System.Security.Principal.Windows/tests/Configurations.props
index 249c8c18b46b..b6f983f5d9de 100644
--- a/src/System.Security.Principal.Windows/tests/Configurations.props
+++ b/src/System.Security.Principal.Windows/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Security.Principal/Directory.Build.props b/src/System.Security.Principal/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Security.Principal/Directory.Build.props
+++ b/src/System.Security.Principal/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Security.Principal/ref/Configurations.props b/src/System.Security.Principal/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Security.Principal/ref/Configurations.props
+++ b/src/System.Security.Principal/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netcoreapp;
diff --git a/src/System.Security.Principal/src/Configurations.props b/src/System.Security.Principal/src/Configurations.props
index 4c3df1a7d7d6..916e6eb02667 100644
--- a/src/System.Security.Principal/src/Configurations.props
+++ b/src/System.Security.Principal/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Security.SecureString/Directory.Build.props b/src/System.Security.SecureString/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Security.SecureString/Directory.Build.props
+++ b/src/System.Security.SecureString/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Security.SecureString/ref/Configurations.props b/src/System.Security.SecureString/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Security.SecureString/ref/Configurations.props
+++ b/src/System.Security.SecureString/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Security.SecureString/src/Configurations.props b/src/System.Security.SecureString/src/Configurations.props
index a8910ef718c7..4c5bf3b44410 100644
--- a/src/System.Security.SecureString/src/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Security.SecureString/tests/Configurations.props b/src/System.Security.SecureString/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Security.SecureString/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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       netstandard;
diff --git a/src/System.ServiceModel.Syndication/Directory.Build.props b/src/System.ServiceModel.Syndication/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.ServiceModel.Syndication/Directory.Build.props
+++ b/src/System.ServiceModel.Syndication/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj b/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
index 9ae5280b4e06..12dc2d2f0c8b 100644
--- a/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
+++ b/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.ServiceModel.Syndication.csproj">
diff --git a/src/System.ServiceModel.Syndication/ref/Configurations.props b/src/System.ServiceModel.Syndication/ref/Configurations.props
index 787148ea6f89..fdd902d8a470 100644
--- a/src/System.ServiceModel.Syndication/ref/Configurations.props
+++ b/src/System.ServiceModel.Syndication/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
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diff --git a/src/System.ServiceModel.Syndication/src/Configurations.props b/src/System.ServiceModel.Syndication/src/Configurations.props
index cbab41e88e7b..6536ffd0eb6c 100644
--- a/src/System.ServiceModel.Syndication/src/Configurations.props
+++ b/src/System.ServiceModel.Syndication/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ServiceModel.Syndication/tests/Configurations.props b/src/System.ServiceModel.Syndication/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.ServiceModel.Syndication/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ServiceProcess.ServiceController/Directory.Build.props b/src/System.ServiceProcess.ServiceController/Directory.Build.props
index 8697d13018f3..0802fbf45dda 100644
--- a/src/System.ServiceProcess.ServiceController/Directory.Build.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj b/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj
index 08cbc4a86278..4cc87307164f 100644
--- a/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ServiceProcess.ServiceController/ref/Configurations.props b/src/System.ServiceProcess.ServiceController/ref/Configurations.props
index 6308641bd9aa..2a7570a4d9b5 100644
--- a/src/System.ServiceProcess.ServiceController/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ServiceProcess.ServiceController/src/Configurations.props b/src/System.ServiceProcess.ServiceController/src/Configurations.props
index 3f56e70e5fd2..7a4bac431357 100644
--- a/src/System.ServiceProcess.ServiceController/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ServiceProcess.ServiceController/tests/Configurations.props b/src/System.ServiceProcess.ServiceController/tests/Configurations.props
index 552f5e92bccd..1af4d0816e72 100644
--- a/src/System.ServiceProcess.ServiceController/tests/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props b/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
index 5e52d60de3ca..0bc2a7e887e2 100644
--- a/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
+++ b/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encoding.CodePages/Directory.Build.props b/src/System.Text.Encoding.CodePages/Directory.Build.props
index 608a635f9e3b..4844c05a1df5 100644
--- a/src/System.Text.Encoding.CodePages/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj b/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
index 60c8b6953a67..76829a27cd24 100644
--- a/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
+++ b/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encoding.CodePages/ref/Configurations.props b/src/System.Text.Encoding.CodePages/ref/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Text.Encoding.CodePages/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Text.Encoding.CodePages/src/Configurations.props b/src/System.Text.Encoding.CodePages/src/Configurations.props
index 5a32b85e4d87..3870f7fe721f 100644
--- a/src/System.Text.Encoding.CodePages/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Encoding.CodePages/tests/Configurations.props b/src/System.Text.Encoding.CodePages/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Text.Encoding.CodePages/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encoding.Extensions/Directory.Build.props b/src/System.Text.Encoding.Extensions/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Text.Encoding.Extensions/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Text.Encoding.Extensions/ref/Configurations.props b/src/System.Text.Encoding.Extensions/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Text.Encoding.Extensions/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Text.Encoding.Extensions/src/Configurations.props b/src/System.Text.Encoding.Extensions/src/Configurations.props
index bf5737bf96af..eff5e83b15ea 100644
--- a/src/System.Text.Encoding.Extensions/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Text.Encoding.Extensions/tests/Configurations.props b/src/System.Text.Encoding.Extensions/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Text.Encoding/Directory.Build.props b/src/System.Text.Encoding/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Text.Encoding/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encoding/ref/Configurations.props b/src/System.Text.Encoding/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Text.Encoding/src/Configurations.props b/src/System.Text.Encoding/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Text.Encoding/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encoding/tests/Configurations.props b/src/System.Text.Encoding/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Encoding/tests/Performance/Configurations.props b/src/System.Text.Encoding/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Encodings.Web/Directory.Build.props b/src/System.Text.Encodings.Web/Directory.Build.props
index 0a49d18ba312..b51c775945e2 100644
--- a/src/System.Text.Encodings.Web/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj b/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
index b5634e537621..932ad138d2ee 100644
--- a/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
+++ b/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Encodings.Web/src/Configurations.props b/src/System.Text.Encodings.Web/src/Configurations.props
index 84da57e60d75..975d55ecff8d 100644
--- a/src/System.Text.Encodings.Web/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Encodings.Web/tests/Configurations.props b/src/System.Text.Encodings.Web/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Text.Encodings.Web/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Text.Json/Directory.Build.props b/src/System.Text.Json/Directory.Build.props
index 8c36c9f7347b..2adad372132c 100644
--- a/src/System.Text.Json/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj b/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
index e86f20ac4adf..ea5d5df47536 100644
--- a/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
+++ b/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <UsingTask TaskName="GenerateSourceWithPublicTypesAsInternal" AssemblyFile="$(PackagingTaskDir)Microsoft.DotNet.Build.Tasks.Packaging.dll" />
 
diff --git a/src/System.Text.Json/ref/Configurations.props b/src/System.Text.Json/ref/Configurations.props
index ea8f3b8f0e19..27b88d26a7f4 100644
--- a/src/System.Text.Json/ref/Configurations.props
+++ b/src/System.Text.Json/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Json/src/Configurations.props b/src/System.Text.Json/src/Configurations.props
index 719ac6fd370f..cb80d82c3f70 100644
--- a/src/System.Text.Json/src/Configurations.props
+++ b/src/System.Text.Json/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Text.Json/tests/Configurations.props b/src/System.Text.Json/tests/Configurations.props
index f338d07cb78c..ef457e292e52 100644
--- a/src/System.Text.Json/tests/Configurations.props
+++ b/src/System.Text.Json/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.RegularExpressions/Directory.Build.props b/src/System.Text.RegularExpressions/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Text.RegularExpressions/Directory.Build.props
+++ b/src/System.Text.RegularExpressions/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Text.RegularExpressions/ref/Configurations.props b/src/System.Text.RegularExpressions/ref/Configurations.props
index 02721ef2a9b7..8fbfed8adee6 100644
--- a/src/System.Text.RegularExpressions/ref/Configurations.props
+++ b/src/System.Text.RegularExpressions/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.RegularExpressions/src/Configurations.props b/src/System.Text.RegularExpressions/src/Configurations.props
index b1a56942f26e..266de993f43a 100644
--- a/src/System.Text.RegularExpressions/src/Configurations.props
+++ b/src/System.Text.RegularExpressions/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       uap-Windows_NT;
diff --git a/src/System.Text.RegularExpressions/tests/Configurations.props b/src/System.Text.RegularExpressions/tests/Configurations.props
index 64aed1a5ce20..0ca1bfc137b4 100644
--- a/src/System.Text.RegularExpressions/tests/Configurations.props
+++ b/src/System.Text.RegularExpressions/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.RegularExpressions/tests/Performance/Configurations.props b/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
+++ b/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Threading.AccessControl/Directory.Build.props b/src/System.Threading.AccessControl/Directory.Build.props
index afbc21511c0c..38448e58868c 100644
--- a/src/System.Threading.AccessControl/Directory.Build.props
+++ b/src/System.Threading.AccessControl/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj b/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
index 1ec50d770550..f427fefe53a4 100644
--- a/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
+++ b/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Threading.AccessControl.csproj">
diff --git a/src/System.Threading.AccessControl/ref/Configurations.props b/src/System.Threading.AccessControl/ref/Configurations.props
index 512a1e812f53..4f11d6b6ba32 100644
--- a/src/System.Threading.AccessControl/ref/Configurations.props
+++ b/src/System.Threading.AccessControl/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Threading.AccessControl/src/Configurations.props b/src/System.Threading.AccessControl/src/Configurations.props
index 2b3ef9068408..06fa68df5e7f 100644
--- a/src/System.Threading.AccessControl/src/Configurations.props
+++ b/src/System.Threading.AccessControl/src/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.AccessControl/tests/Configurations.props b/src/System.Threading.AccessControl/tests/Configurations.props
index 249c8c18b46b..b6f983f5d9de 100644
--- a/src/System.Threading.AccessControl/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Threading.Channels/Directory.Build.props b/src/System.Threading.Channels/Directory.Build.props
index 6c5c34bc9f44..e717e081f0bc 100644
--- a/src/System.Threading.Channels/Directory.Build.props
+++ b/src/System.Threading.Channels/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj b/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
index 88314191da9d..0ef775b7e767 100644
--- a/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
+++ b/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Threading.Channels.csproj">
diff --git a/src/System.Threading.Channels/ref/Configurations.props b/src/System.Threading.Channels/ref/Configurations.props
index 7eb3ac6025bf..da41bbfd7275 100644
--- a/src/System.Threading.Channels/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard1.3;
diff --git a/src/System.Threading.Channels/src/Configurations.props b/src/System.Threading.Channels/src/Configurations.props
index 35fff124f738..3ae3c274fb36 100644
--- a/src/System.Threading.Channels/src/Configurations.props
+++ b/src/System.Threading.Channels/src/Configurations.props
@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Channels/tests/Configurations.props b/src/System.Threading.Channels/tests/Configurations.props
index 271a4be4c93c..093f19aa9028 100644
--- a/src/System.Threading.Channels/tests/Configurations.props
+++ b/src/System.Threading.Channels/tests/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Threading.Channels/tests/Performance/Configurations.props b/src/System.Threading.Channels/tests/Performance/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Threading.Channels/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Threading.Overlapped/Directory.Build.props b/src/System.Threading.Overlapped/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading.Overlapped/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Overlapped/ref/Configurations.props b/src/System.Threading.Overlapped/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Overlapped/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Overlapped/src/Configurations.props b/src/System.Threading.Overlapped/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Threading.Overlapped/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Overlapped/tests/Configurations.props b/src/System.Threading.Overlapped/tests/Configurations.props
index 8527afaf3120..ff7fda45759c 100644
--- a/src/System.Threading.Overlapped/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Dataflow/Directory.Build.props b/src/System.Threading.Tasks.Dataflow/Directory.Build.props
index 0faee68bde80..64d0b62f7a4e 100644
--- a/src/System.Threading.Tasks.Dataflow/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <PackageVersion>4.10.0</PackageVersion>
diff --git a/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj b/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj
index cdf941049060..824399fcc56b 100644
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Dataflow/ref/Configurations.props b/src/System.Threading.Tasks.Dataflow/ref/Configurations.props
index 56c04e4080c7..5d8a5668eeb8 100644
--- a/src/System.Threading.Tasks.Dataflow/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Dataflow/src/Configurations.props b/src/System.Threading.Tasks.Dataflow/src/Configurations.props
index 56c04e4080c7..5d8a5668eeb8 100644
--- a/src/System.Threading.Tasks.Dataflow/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Dataflow/tests/Configurations.props b/src/System.Threading.Tasks.Dataflow/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading.Tasks.Dataflow/tests/Configurations.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Extensions/Directory.Build.props b/src/System.Threading.Tasks.Extensions/Directory.Build.props
index 4347270f65b9..ec32256af940 100644
--- a/src/System.Threading.Tasks.Extensions/Directory.Build.props
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@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Extensions/ref/Configurations.props b/src/System.Threading.Tasks.Extensions/ref/Configurations.props
index 02721ef2a9b7..8fbfed8adee6 100644
--- a/src/System.Threading.Tasks.Extensions/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Extensions/src/Configurations.props b/src/System.Threading.Tasks.Extensions/src/Configurations.props
index d58742648ec5..3fdbbdff0b26 100644
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Extensions/tests/Configurations.props b/src/System.Threading.Tasks.Extensions/tests/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Tasks.Extensions/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props b/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props
index d3ac8a63c74a..6644453ed1d6 100644
--- a/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Tasks.Parallel/Directory.Build.props b/src/System.Threading.Tasks.Parallel/Directory.Build.props
index cac4c947b8bd..6ba6b4671368 100644
--- a/src/System.Threading.Tasks.Parallel/Directory.Build.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Threading.Tasks.Parallel/ref/Configurations.props b/src/System.Threading.Tasks.Parallel/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Tasks.Parallel/ref/Configurations.props
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diff --git a/src/System.Threading.Tasks.Parallel/src/Configurations.props b/src/System.Threading.Tasks.Parallel/src/Configurations.props
index b7611d75b720..296b296ee218 100644
--- a/src/System.Threading.Tasks.Parallel/src/Configurations.props
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diff --git a/src/System.Threading.Tasks.Parallel/tests/Configurations.props b/src/System.Threading.Tasks.Parallel/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading.Tasks.Parallel/tests/Configurations.props
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diff --git a/src/System.Threading.Tasks/Directory.Build.props b/src/System.Threading.Tasks/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading.Tasks/Directory.Build.props
+++ b/src/System.Threading.Tasks/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Threading.Tasks/ref/Configurations.props b/src/System.Threading.Tasks/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Tasks/ref/Configurations.props
+++ b/src/System.Threading.Tasks/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Threading.Tasks/src/Configurations.props b/src/System.Threading.Tasks/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Threading.Tasks/src/Configurations.props
+++ b/src/System.Threading.Tasks/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Threading.Tasks/tests/Configurations.props b/src/System.Threading.Tasks/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Threading.Tasks/tests/Configurations.props
+++ b/src/System.Threading.Tasks/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Threading.Thread/Directory.Build.props b/src/System.Threading.Thread/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading.Thread/Directory.Build.props
+++ b/src/System.Threading.Thread/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Threading.Thread/ref/Configurations.props b/src/System.Threading.Thread/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Thread/ref/Configurations.props
+++ b/src/System.Threading.Thread/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netcoreapp;
diff --git a/src/System.Threading.Thread/src/Configurations.props b/src/System.Threading.Thread/src/Configurations.props
index 6da09827f376..c4b354d18fcd 100644
--- a/src/System.Threading.Thread/src/Configurations.props
+++ b/src/System.Threading.Thread/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       uapaot-Windows_NT;
diff --git a/src/System.Threading.Thread/tests/Configurations.props b/src/System.Threading.Thread/tests/Configurations.props
index f2e3342d5b55..60996909f847 100644
--- a/src/System.Threading.Thread/tests/Configurations.props
+++ b/src/System.Threading.Thread/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props b/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/tests/MTAMain/Configurations.props b/src/System.Threading.Thread/tests/MTAMain/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading.Thread/tests/MTAMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/MTAMain/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/tests/STAMain/Configurations.props b/src/System.Threading.Thread/tests/STAMain/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading.Thread/tests/STAMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/STAMain/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.ThreadPool/Directory.Build.props b/src/System.Threading.ThreadPool/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading.ThreadPool/Directory.Build.props
+++ b/src/System.Threading.ThreadPool/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.ThreadPool/ref/Configurations.props b/src/System.Threading.ThreadPool/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.ThreadPool/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.ThreadPool/src/Configurations.props b/src/System.Threading.ThreadPool/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Threading.ThreadPool/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.ThreadPool/tests/Configurations.props b/src/System.Threading.ThreadPool/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Threading.ThreadPool/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Timer/Directory.Build.props b/src/System.Threading.Timer/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading.Timer/Directory.Build.props
+++ b/src/System.Threading.Timer/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Timer/ref/Configurations.props b/src/System.Threading.Timer/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading.Timer/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Threading.Timer/src/Configurations.props b/src/System.Threading.Timer/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Threading.Timer/src/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Timer/tests/Configurations.props b/src/System.Threading.Timer/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.Threading.Timer/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Threading/Directory.Build.props b/src/System.Threading/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Threading/Directory.Build.props
+++ b/src/System.Threading/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Threading/ref/Configurations.props b/src/System.Threading/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Threading/ref/Configurations.props
+++ b/src/System.Threading/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading/src/Configurations.props b/src/System.Threading/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Threading/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading/tests/Configurations.props b/src/System.Threading/tests/Configurations.props
index 77a4b65bc94a..4c35b6322355 100644
--- a/src/System.Threading/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading/tests/Performance/Configurations.props b/src/System.Threading/tests/Performance/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Threading/tests/Performance/Configurations.props
+++ b/src/System.Threading/tests/Performance/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Transactions.Local/Directory.Build.props b/src/System.Transactions.Local/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Transactions.Local/Directory.Build.props
+++ b/src/System.Transactions.Local/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Transactions.Local/ref/Configurations.props b/src/System.Transactions.Local/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Transactions.Local/ref/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Transactions.Local/src/Configurations.props b/src/System.Transactions.Local/src/Configurations.props
index d8cfd389a8f6..aca7cfa92700 100644
--- a/src/System.Transactions.Local/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Transactions.Local/tests/Configurations.props b/src/System.Transactions.Local/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Transactions.Local/tests/Configurations.props
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@@ -1,5 +1,5 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.ValueTuple/Directory.Build.props b/src/System.ValueTuple/Directory.Build.props
index c5a1d5d47bbc..54212ae92a33 100644
--- a/src/System.ValueTuple/Directory.Build.props
+++ b/src/System.ValueTuple/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.ValueTuple/ref/Configurations.props b/src/System.ValueTuple/ref/Configurations.props
index e81ce942903c..ee2ff4abfe62 100644
--- a/src/System.ValueTuple/ref/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ValueTuple/src/Configurations.props b/src/System.ValueTuple/src/Configurations.props
index e81ce942903c..ee2ff4abfe62 100644
--- a/src/System.ValueTuple/src/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.ValueTuple/tests/Configurations.props b/src/System.ValueTuple/tests/Configurations.props
index 8b803e0772f2..2c27f0d86a22 100644
--- a/src/System.ValueTuple/tests/Configurations.props
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@@ -1,5 +1,5 @@
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diff --git a/src/System.Web.HttpUtility/Directory.Build.props b/src/System.Web.HttpUtility/Directory.Build.props
index b41cdb0fa336..bee8f6e6e1f0 100644
--- a/src/System.Web.HttpUtility/Directory.Build.props
+++ b/src/System.Web.HttpUtility/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Web.HttpUtility/ref/Configurations.props b/src/System.Web.HttpUtility/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Web.HttpUtility/ref/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Web.HttpUtility/src/Configurations.props b/src/System.Web.HttpUtility/src/Configurations.props
index d8cfd389a8f6..aca7cfa92700 100644
--- a/src/System.Web.HttpUtility/src/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Web.HttpUtility/tests/Configurations.props b/src/System.Web.HttpUtility/tests/Configurations.props
index c398e42e8994..df9b80b230a8 100644
--- a/src/System.Web.HttpUtility/tests/Configurations.props
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@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Windows.Extensions/Directory.Build.props b/src/System.Windows.Extensions/Directory.Build.props
index 345821115800..373bd4c1c425 100644
--- a/src/System.Windows.Extensions/Directory.Build.props
+++ b/src/System.Windows.Extensions/Directory.Build.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj b/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
index f32585fb25c4..fb706c974509 100644
--- a/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
+++ b/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
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diff --git a/src/System.Windows.Extensions/ref/Configurations.props b/src/System.Windows.Extensions/ref/Configurations.props
index 2845c11c541d..323c11cf6937 100644
--- a/src/System.Windows.Extensions/ref/Configurations.props
+++ b/src/System.Windows.Extensions/ref/Configurations.props
@@ -1,5 +1,5 @@
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-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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diff --git a/src/System.Windows.Extensions/ref/System.Windows.Extensions.csproj b/src/System.Windows.Extensions/ref/System.Windows.Extensions.csproj
index 75704bfb3816..0484ea038f5b 100644
--- a/src/System.Windows.Extensions/ref/System.Windows.Extensions.csproj
+++ b/src/System.Windows.Extensions/ref/System.Windows.Extensions.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
+<Project Sdk="Microsoft.NET.Sdk">
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diff --git a/src/System.Windows.Extensions/src/Configurations.props b/src/System.Windows.Extensions/src/Configurations.props
index 965deb6ee6db..b77d16f00772 100644
--- a/src/System.Windows.Extensions/src/Configurations.props
+++ b/src/System.Windows.Extensions/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Windows.Extensions/tests/Configurations.props b/src/System.Windows.Extensions/tests/Configurations.props
index 03909885449b..899049fcb776 100644
--- a/src/System.Windows.Extensions/tests/Configurations.props
+++ b/src/System.Windows.Extensions/tests/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Windows.Extensions/tests/System.Windows.Extensions.Tests.csproj b/src/System.Windows.Extensions/tests/System.Windows.Extensions.Tests.csproj
index 6e9dff8b6506..795e32746594 100644
--- a/src/System.Windows.Extensions/tests/System.Windows.Extensions.Tests.csproj
+++ b/src/System.Windows.Extensions/tests/System.Windows.Extensions.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="14.0">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <ProjectGuid>{AC1A1515-70D8-42E4-9B19-A72F739E974C}</ProjectGuid>
     <Configurations>netcoreapp-Windows_NT-Debug;netcoreapp-Windows_NT-Release;netfx-Windows_NT-Debug;netfx-Windows_NT-Release</Configurations>
diff --git a/src/System.Xml.ReaderWriter/Directory.Build.props b/src/System.Xml.ReaderWriter/Directory.Build.props
index 047458dfc570..b90a424e652c 100644
--- a/src/System.Xml.ReaderWriter/Directory.Build.props
+++ b/src/System.Xml.ReaderWriter/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Xml.ReaderWriter/ref/Configurations.props b/src/System.Xml.ReaderWriter/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.ReaderWriter/ref/Configurations.props
+++ b/src/System.Xml.ReaderWriter/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.ReaderWriter/src/Configurations.props b/src/System.Xml.ReaderWriter/src/Configurations.props
index af56e5ebca16..7a504cca09b8 100644
--- a/src/System.Xml.ReaderWriter/src/Configurations.props
+++ b/src/System.Xml.ReaderWriter/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XDocument/Directory.Build.props b/src/System.Xml.XDocument/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Xml.XDocument/Directory.Build.props
+++ b/src/System.Xml.XDocument/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XDocument/ref/Configurations.props b/src/System.Xml.XDocument/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.XDocument/ref/Configurations.props
+++ b/src/System.Xml.XDocument/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XDocument/src/Configurations.props b/src/System.Xml.XDocument/src/Configurations.props
index af56e5ebca16..7a504cca09b8 100644
--- a/src/System.Xml.XDocument/src/Configurations.props
+++ b/src/System.Xml.XDocument/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XPath.XDocument/Directory.Build.props b/src/System.Xml.XPath.XDocument/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Xml.XPath.XDocument/Directory.Build.props
+++ b/src/System.Xml.XPath.XDocument/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XPath.XDocument/ref/Configurations.props b/src/System.Xml.XPath.XDocument/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.XPath.XDocument/ref/Configurations.props
+++ b/src/System.Xml.XPath.XDocument/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XPath.XDocument/src/Configurations.props b/src/System.Xml.XPath.XDocument/src/Configurations.props
index af56e5ebca16..7a504cca09b8 100644
--- a/src/System.Xml.XPath.XDocument/src/Configurations.props
+++ b/src/System.Xml.XPath.XDocument/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XPath/Directory.Build.props b/src/System.Xml.XPath/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Xml.XPath/Directory.Build.props
+++ b/src/System.Xml.XPath/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XPath/ref/Configurations.props b/src/System.Xml.XPath/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.XPath/ref/Configurations.props
+++ b/src/System.Xml.XPath/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XPath/src/Configurations.props b/src/System.Xml.XPath/src/Configurations.props
index af56e5ebca16..7a504cca09b8 100644
--- a/src/System.Xml.XPath/src/Configurations.props
+++ b/src/System.Xml.XPath/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XmlDocument/Directory.Build.props b/src/System.Xml.XmlDocument/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Xml.XmlDocument/Directory.Build.props
+++ b/src/System.Xml.XmlDocument/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XmlDocument/ref/Configurations.props b/src/System.Xml.XmlDocument/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.XmlDocument/ref/Configurations.props
+++ b/src/System.Xml.XmlDocument/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XmlDocument/src/Configurations.props b/src/System.Xml.XmlDocument/src/Configurations.props
index af56e5ebca16..7a504cca09b8 100644
--- a/src/System.Xml.XmlDocument/src/Configurations.props
+++ b/src/System.Xml.XmlDocument/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XmlSerializer/Directory.Build.props b/src/System.Xml.XmlSerializer/Directory.Build.props
index 166d0a25e062..4988fc07e1bc 100644
--- a/src/System.Xml.XmlSerializer/Directory.Build.props
+++ b/src/System.Xml.XmlSerializer/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XmlSerializer/ref/Configurations.props b/src/System.Xml.XmlSerializer/ref/Configurations.props
index c70175586371..5e830ff8b39b 100644
--- a/src/System.Xml.XmlSerializer/ref/Configurations.props
+++ b/src/System.Xml.XmlSerializer/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XmlSerializer/src/Configurations.props b/src/System.Xml.XmlSerializer/src/Configurations.props
index ea34d6257b80..5015085ba53a 100644
--- a/src/System.Xml.XmlSerializer/src/Configurations.props
+++ b/src/System.Xml.XmlSerializer/src/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/mscorlib.WinRT-Facade/ref/Configurations.props b/src/mscorlib.WinRT-Facade/ref/Configurations.props
index 0840ff6dc030..5f2c40b8caaa 100644
--- a/src/mscorlib.WinRT-Facade/ref/Configurations.props
+++ b/src/mscorlib.WinRT-Facade/ref/Configurations.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/src/post.builds b/src/post.builds
index 5feec77d28fa..aa893e2a95bd 100644
--- a/src/post.builds
+++ b/src/post.builds
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
 
   <Import Project="Directory.Build.props" />
   <Import Project="..\Directory.Build.targets" />
diff --git a/src/pretest.builds b/src/pretest.builds
index b4946429c405..72de6ca80fed 100644
--- a/src/pretest.builds
+++ b/src/pretest.builds
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <Import Project="Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/src/shims/ApiCompat.proj b/src/shims/ApiCompat.proj
index 9df23e7c9524..ab70c7ab48ff 100644
--- a/src/shims/ApiCompat.proj
+++ b/src/shims/ApiCompat.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- ApiCompat-specific build configurations for runtime-only targets -->
     <BuildConfigurations>
diff --git a/src/shims/Directory.Build.props b/src/shims/Directory.Build.props
index 4561b7efd58c..e6db94386199 100644
--- a/src/shims/Directory.Build.props
+++ b/src/shims/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- shared configurations between shims and apicompat -->
     <BuildConfigurations>
diff --git a/src/shims/manual/Directory.Build.props b/src/shims/manual/Directory.Build.props
index b5e9ac7f4cc4..abc84621426d 100644
--- a/src/shims/manual/Directory.Build.props
+++ b/src/shims/manual/Directory.Build.props
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0;
diff --git a/src/shims/netfxreference.props b/src/shims/netfxreference.props
index 387f1d06b513..449cdecf3ef3 100644
--- a/src/shims/netfxreference.props
+++ b/src/shims/netfxreference.props
@@ -1,4 +1,4 @@
-<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
   <ItemGroup>
     <NetFxReference Include="mscorlib">
       <ExcludeFromRuntime>true</ExcludeFromRuntime>
diff --git a/src/shims/shims.proj b/src/shims/shims.proj
index 51e900d5d2c5..321259f6dca1 100644
--- a/src/shims/shims.proj
+++ b/src/shims/shims.proj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0

From 73fdcf2614c40572a5da937b0cfef7434b683a10 Mon Sep 17 00:00:00 2001
From: Viktor Hofer <viktor.hofer@microsoft.com>
Date: Sat, 2 Mar 2019 21:17:50 +0100
Subject: [PATCH 3/3] Remove xml header and remove DefaultTargets

---
 Directory.Build.props                                  |  3 +--
 Directory.Build.targets                                |  1 -
 Documentation/coding-guidelines/package-projects.md    | 10 +---------
 NuGet.config                                           |  1 -
 build.proj                                             |  1 -
 eng/Build.props                                        |  1 -
 eng/CodeAnalysis.targets                               |  1 -
 eng/DisableSourceControlManagement.targets             |  1 -
 eng/InternalTools.props                                |  1 -
 eng/Packaging.props                                    |  2 +-
 eng/ReferenceAssemblies.props                          |  1 -
 eng/Resources.targets                                  |  1 -
 eng/Tools.props                                        |  1 -
 eng/Version.Details.xml                                |  1 -
 eng/Versions.props                                     |  1 -
 eng/blockReflectionAttribute.targets                   |  1 -
 eng/codeOptimization.targets                           |  2 +-
 eng/common/internal/Tools.csproj                       |  1 -
 eng/configurations/archgroups.props                    |  3 +--
 eng/configurations/configurationgroups.props           |  3 +--
 eng/configurations/osgroups.props                      |  3 +--
 eng/configurations/properties.props                    |  1 -
 eng/configurations/targetgroups.props                  |  3 +--
 eng/depProj.targets                                    |  1 -
 eng/dependencies.props                                 |  2 +-
 eng/dir.traversal.targets                              |  1 -
 eng/disableUap.targets                                 |  2 +-
 eng/illink.targets                                     |  1 -
 eng/referenceFromRuntime.targets                       |  1 -
 eng/resolveContract.targets                            |  1 -
 external/Directory.Build.props                         |  2 +-
 external/Directory.Build.targets                       |  2 +-
 external/ILLink/Configurations.props                   |  3 +--
 external/ILLink/ILLink.depproj                         |  1 -
 .../harvestPackages.SharedFramework.depproj            |  1 -
 external/binplacePackages/Configurations.props         |  3 +--
 external/binplacePackages/binplacePackages.depproj     |  3 +--
 external/docs/Configurations.props                     |  3 +--
 external/docs/docs.depproj                             |  1 -
 external/harvestPackages/Configurations.props          |  3 +--
 external/harvestPackages/harvestPackages.depproj       |  3 +--
 external/netcoreapp/Configurations.props               |  3 +--
 external/netcoreapp/netcoreapp.depproj                 |  3 +--
 external/netfx/Configurations.props                    |  3 +--
 external/netfx/netfx.depproj                           |  3 +--
 external/netstandard/Configurations.props              |  3 +--
 external/netstandard/netstandard.depproj               |  3 +--
 external/optimizationData/Configurations.props         |  3 +--
 external/optimizationData/optimizationData.depproj     |  3 +--
 external/runtime/Configurations.props                  |  3 +--
 external/runtime/Directory.Build.props                 |  2 +-
 external/runtime/runtime.depproj                       |  3 +--
 external/test-runtime/Configurations.props             |  3 +--
 external/test-runtime/XUnit.Runtime.depproj            |  1 -
 external/tools/Configurations.props                    |  3 +--
 external/tools/tools.depproj                           |  3 +--
 external/uap/Configurations.props                      |  3 +--
 external/uap/uap.depproj                               |  1 -
 external/winrt/Configurations.props                    |  3 +--
 external/winrt/winrt.depproj                           |  3 +--
 pkg/Directory.Build.props                              |  1 -
 pkg/Directory.Build.targets                            |  1 -
 .../Configurations.props                               |  3 +--
 .../Microsoft.NETCore.Platforms.Future.builds          |  1 -
 .../Microsoft.NETCore.Platforms.Future.pkgproj         |  3 +--
 .../runtimeGroups.props                                |  3 +--
 pkg/Microsoft.NETCore.Platforms/Configurations.props   |  3 +--
 .../Microsoft.NETCore.Platforms.builds                 |  1 -
 .../Microsoft.NETCore.Platforms.pkgproj                |  3 +--
 pkg/Microsoft.NETCore.Platforms/runtimeGroups.props    |  3 +--
 pkg/Microsoft.NETCore.Targets/Configurations.props     |  3 +--
 .../Microsoft.NETCore.Targets.builds                   |  1 -
 .../Microsoft.NETCore.Targets.pkgproj                  |  3 +--
 .../Configurations.props                               |  3 +--
 .../Microsoft.Private.CoreFx.NETCoreApp.builds         |  1 -
 .../Microsoft.Private.CoreFx.NETCoreApp.pkgproj        |  3 +--
 .../netcoreapp.rids.props                              |  3 +--
 pkg/Microsoft.Private.CoreFx.UAP/Configurations.props  |  3 +--
 .../Microsoft.Private.CoreFx.UAP.builds                |  1 -
 .../Microsoft.Private.CoreFx.UAP.pkgproj               |  3 +--
 pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props        |  3 +--
 .../Microsoft.Private.PackageBaseline.builds           |  1 -
 .../Microsoft.Private.PackageBaseline.pkgproj          |  3 +--
 .../Microsoft.Windows.Compatibility.Shims.builds       |  1 -
 .../Microsoft.Windows.Compatibility.Shims.pkgproj      |  1 -
 .../Microsoft.Windows.Compatibility.builds             |  1 -
 .../Microsoft.Windows.Compatibility.pkgproj            |  3 +--
 pkg/dir.traversal.targets                              |  1 -
 pkg/frameworkPackage.targets                           |  1 -
 .../Configurations.props                               |  3 +--
 .../netcoreapp.rids.props                              |  3 +--
 .../runtime.native.System.IO.Ports.builds              |  1 -
 .../runtime.native.System.IO.Ports.pkgproj             |  3 +--
 pkg/test/frameworkSettings/net/settings.targets        |  1 -
 pkg/test/frameworkSettings/netcoreapp/settings.targets |  1 -
 .../frameworkSettings/netcoreapp1.0/settings.targets   |  1 -
 .../frameworkSettings/netcoreapp1.1/settings.targets   |  1 -
 .../frameworkSettings/netcoreapp2.0/settings.targets   |  1 -
 .../frameworkSettings/netcoreapp3.0/settings.targets   |  1 -
 .../frameworkSettings/netstandard/settings.targets     |  1 -
 .../netcoreapp2.2/settings.targets                     |  1 -
 .../netcoreapp3.0/settings.targets                     |  1 -
 .../netcoreapp1.0/settings.targets                     |  1 -
 .../netcoreapp1.1/settings.targets                     |  1 -
 .../netcoreapp2.2/settings.targets                     |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../workaroundMissingSystemMemory.targets              |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 .../netcoreapp1.0/workaroundDowngrade.targets          |  1 -
 pkg/test/packageTest.targets                           |  1 -
 pkg/test/props/Directory.Build.props                   |  1 -
 pkg/test/test.msbuild                                  |  1 -
 pkg/test/testPackages.proj                             |  1 -
 src/CodeAnalysis.ruleset                               |  3 +--
 .../CoreLib/System.Private.CoreLib.Shared.projitems    |  3 +--
 .../System/Security/Cryptography/Asn1/AsnXml.targets   |  2 +-
 .../src/System/Security/Cryptography/Asn1/asn.xsd      |  3 +--
 .../src/System/Security/Cryptography/Asn1/asn.xslt     |  3 +--
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 .../tests/TestFeeds/AtomFeeds/type-xhtml.xml           |  1 -
 .../tests/TestFeeds/AtomFeeds/type-xml.xml             |  1 -
 .../TestFeeds/AtomFeeds/undeterminable-vocabulary.xml  |  1 -
 .../TestFeeds/AtomFeeds/undeterminable-vocabulary2.xml |  1 -
 .../TestFeeds/AtomFeeds/undeterminable-vocabulary3.xml |  1 -
 .../tests/TestFeeds/AtomFeeds/unregistered-rel.xml     |  1 -
 .../tests/TestFeeds/AtomFeeds/updated-example3.xml     |  1 -
 .../tests/TestFeeds/AtomFeeds/valid-xml-base-iri.xml   |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-author-uri.xml        |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-category-scheme.xml   |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-content-src.xml       |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-entry-id.xml          |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-entry-published.xml   |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-entry-updated.xml     |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-feed-icon.xml         |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-feed-id.xml           |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-feed-logo.xml         |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-feed-updated.xml      |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-generator-uri.xml     |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-link-href.xml         |  1 -
 .../tests/TestFeeds/AtomFeeds/ws-link-rel.xml          |  1 -
 .../tests/TestFeeds/AtomFeeds/xhtml-extensions.xml     |  1 -
 .../tests/TestFeeds/AtomFeeds/xml-base-ambiguous.xml   |  1 -
 .../tests/TestFeeds/AtomFeeds/xml-base-elem-ne-doc.xml |  1 -
 .../tests/TestFeeds/AtomFeeds/xml-base.xml             |  1 -
 .../tests/TestFeeds/AtomFeeds/xml-lang-blank.xml       |  1 -
 .../tests/TestFeeds/AtomFeeds/xml-lang.xml             |  1 -
 .../tests/TestFeeds/AtomFeeds/zero-entries.xml         |  1 -
 .../tests/TestFeeds/RssDisjointItems.xml               |  3 +--
 .../tests/TestFeeds/RssFeedWithCustomImageName.xml     |  3 +--
 .../tests/TestFeeds/SimpleAtomFeed.xml                 |  3 +--
 .../tests/TestFeeds/SimpleAtomFeedCustomParser.xml     |  3 +--
 .../tests/TestFeeds/SimpleRssFeed.xml                  |  3 +--
 .../tests/TestFeeds/atom_spec_example.xml              |  3 +--
 .../tests/TestFeeds/brief-entry-noerror.xml            |  1 -
 .../Directory.Build.props                              |  3 +--
 .../System.ServiceProcess.ServiceController.pkgproj    |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../Configurations.props                               |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../pkg/System.Text.Encoding.CodePages.pkgproj         |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Text.Encoding/Directory.Build.props         |  3 +--
 src/System.Text.Encoding/ref/Configurations.props      |  3 +--
 src/System.Text.Encoding/src/Configurations.props      |  3 +--
 src/System.Text.Encoding/tests/Configurations.props    |  3 +--
 .../tests/Performance/Configurations.props             |  3 +--
 src/System.Text.Encodings.Web/Directory.Build.props    |  3 +--
 .../pkg/System.Text.Encodings.Web.pkgproj              |  3 +--
 src/System.Text.Encodings.Web/src/Configurations.props |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Text.Json/Directory.Build.props             |  3 +--
 .../pkg/Microsoft.Bcl.Json.Sources.pkgproj             |  1 -
 src/System.Text.Json/ref/Configurations.props          |  3 +--
 src/System.Text.Json/src/Configurations.props          |  3 +--
 src/System.Text.Json/src/Resources/Strings.resx        |  3 +--
 src/System.Text.Json/src/System.Text.Json.csproj       |  3 +--
 src/System.Text.Json/tests/Configurations.props        |  3 +--
 src/System.Text.Json/tests/Resources/Strings.resx      |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../tests/Performance/Configurations.props             |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../pkg/System.Threading.AccessControl.pkgproj         |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Threading.Channels/Directory.Build.props    |  3 +--
 .../pkg/System.Threading.Channels.pkgproj              |  3 +--
 src/System.Threading.Channels/ref/Configurations.props |  3 +--
 src/System.Threading.Channels/src/Configurations.props |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../tests/Performance/Configurations.props             |  3 +--
 src/System.Threading.Overlapped/Directory.Build.props  |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../pkg/System.Threading.Tasks.Dataflow.pkgproj        |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../src/XmlDocs/System.Threading.Tasks.Dataflow.xml    |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../tests/Configurations.props                         |  3 +--
 .../tests/Performance/Configurations.props             |  3 +--
 .../Directory.Build.props                              |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Threading.Tasks/Directory.Build.props       |  3 +--
 src/System.Threading.Tasks/ref/Configurations.props    |  3 +--
 src/System.Threading.Tasks/src/Configurations.props    |  3 +--
 src/System.Threading.Tasks/tests/Configurations.props  |  3 +--
 src/System.Threading.Thread/Directory.Build.props      |  3 +--
 src/System.Threading.Thread/ref/Configurations.props   |  3 +--
 src/System.Threading.Thread/src/Configurations.props   |  3 +--
 src/System.Threading.Thread/src/Resources/Strings.resx |  3 +--
 src/System.Threading.Thread/tests/Configurations.props |  3 +--
 .../DefaultApartmentStateMain/Configurations.props     |  3 +--
 .../tests/MTAMain/Configurations.props                 |  3 +--
 .../tests/STAMain/Configurations.props                 |  3 +--
 src/System.Threading.ThreadPool/Directory.Build.props  |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Threading.Timer/Directory.Build.props       |  3 +--
 src/System.Threading.Timer/ref/Configurations.props    |  3 +--
 src/System.Threading.Timer/src/Configurations.props    |  3 +--
 src/System.Threading.Timer/tests/Configurations.props  |  3 +--
 src/System.Threading/Directory.Build.props             |  3 +--
 src/System.Threading/ref/Configurations.props          |  3 +--
 src/System.Threading/src/Configurations.props          |  3 +--
 src/System.Threading/src/Resources/Strings.resx        |  3 +--
 src/System.Threading/tests/Configurations.props        |  3 +--
 .../tests/Performance/Configurations.props             |  3 +--
 src/System.Transactions.Local/Directory.Build.props    |  3 +--
 src/System.Transactions.Local/ref/Configurations.props |  3 +--
 src/System.Transactions.Local/src/Configurations.props |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.ValueTuple/Directory.Build.props            |  3 +--
 src/System.ValueTuple/ref/Configurations.props         |  3 +--
 src/System.ValueTuple/src/Configurations.props         |  3 +--
 src/System.ValueTuple/tests/Configurations.props       |  3 +--
 src/System.Web.HttpUtility/Directory.Build.props       |  3 +--
 src/System.Web.HttpUtility/ref/Configurations.props    |  3 +--
 src/System.Web.HttpUtility/src/Configurations.props    |  3 +--
 src/System.Web.HttpUtility/tests/Configurations.props  |  3 +--
 src/System.Windows.Extensions/Directory.Build.props    |  3 +--
 .../pkg/System.Windows.Extensions.pkgproj              |  3 +--
 src/System.Windows.Extensions/ref/Configurations.props |  3 +--
 src/System.Windows.Extensions/src/Configurations.props |  3 +--
 .../src/Resources/Strings.resx                         |  3 +--
 .../tests/Configurations.props                         |  3 +--
 src/System.Xml.ReaderWriter/Directory.Build.props      |  3 +--
 src/System.Xml.ReaderWriter/ref/Configurations.props   |  3 +--
 src/System.Xml.ReaderWriter/src/Configurations.props   |  3 +--
 src/System.Xml.XDocument/Directory.Build.props         |  3 +--
 src/System.Xml.XDocument/ref/Configurations.props      |  3 +--
 src/System.Xml.XDocument/src/Configurations.props      |  3 +--
 src/System.Xml.XPath.XDocument/Directory.Build.props   |  3 +--
 .../ref/Configurations.props                           |  3 +--
 .../src/Configurations.props                           |  3 +--
 src/System.Xml.XPath/Directory.Build.props             |  3 +--
 src/System.Xml.XPath/ref/Configurations.props          |  3 +--
 src/System.Xml.XPath/src/Configurations.props          |  3 +--
 src/System.Xml.XmlDocument/Directory.Build.props       |  3 +--
 src/System.Xml.XmlDocument/ref/Configurations.props    |  3 +--
 src/System.Xml.XmlDocument/src/Configurations.props    |  3 +--
 src/System.Xml.XmlSerializer/Directory.Build.props     |  3 +--
 src/System.Xml.XmlSerializer/ref/Configurations.props  |  3 +--
 src/System.Xml.XmlSerializer/src/Configurations.props  |  3 +--
 src/mscorlib.WinRT-Facade/ref/Configurations.props     |  3 +--
 src/packages.builds                                    |  1 -
 src/post.builds                                        |  1 -
 src/pretest.builds                                     |  1 -
 src/ref.builds                                         |  1 -
 src/shims/ApiCompat.proj                               |  1 -
 src/shims/Directory.Build.props                        |  3 +--
 src/shims/manual/Directory.Build.props                 |  3 +--
 src/shims/shims.proj                                   |  1 -
 src/src.builds                                         |  1 -
 src/tests.builds                                       |  1 -
 1491 files changed, 1136 insertions(+), 2625 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index cde9c9a48e12..2f2ce2f63bbd 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" TreatAsLocalProperty="ExcludeRestorePackageImports">
+<Project TreatAsLocalProperty="ExcludeRestorePackageImports">
   <!-- Base repo layout properties -->
   <PropertyGroup>
     <RepoRoot>$(MSBuildThisFileDirectory)</RepoRoot>
diff --git a/Directory.Build.targets b/Directory.Build.targets
index 3db99cfe39ef..3cfb5381fb41 100644
--- a/Directory.Build.targets
+++ b/Directory.Build.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
 
   <PropertyGroup>
diff --git a/Documentation/coding-guidelines/package-projects.md b/Documentation/coding-guidelines/package-projects.md
index d1e33f020e45..c6594d353cf0 100644
--- a/Documentation/coding-guidelines/package-projects.md
+++ b/Documentation/coding-guidelines/package-projects.md
@@ -14,7 +14,6 @@ This is the simplest case.  The package project need only reference the single p
 
 Sample `System.Text.Encodings.Web.pkgproj`
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
@@ -33,7 +32,6 @@ These packages need to include placeholders for inbox platforms.  They should al
 
 Sample `System.Collections.Concurrent.pkgproj`
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
   <ItemGroup>
@@ -62,7 +60,6 @@ Framework specific libraries are effectively the same as the previous example.
 
 Sample System.Net.Security.pkgproj
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
   <ItemGroup>
@@ -92,7 +89,6 @@ Sample System.Net.Security.pkgproj
 Sample \ref .builds file defining a constant used to filter API that were added on top of the netstandard1.7 ones and are available only in netcoreapp1.1:
 
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
   <PropertyGroup>
@@ -122,8 +118,7 @@ Conditional compilation using the above-mentioned constant (from `ref\System.Net
 Sample \src .builds file (in this case the implementation is the same in both netcoreapp1.1 and netstandard1.7):
 
 ```
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
   <ItemGroup>
     <Project Include="System.Net.Security.csproj">
@@ -151,7 +146,6 @@ These packages need to provide a different platform specific implementation on e
 
 Sample `System.IO.FileSystem.pkgproj`
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
   <ItemGroup>
@@ -173,7 +167,6 @@ Sample `System.IO.FileSystem.pkgproj`
 
 `win/System.IO.FileSystem.pkgproj`
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
@@ -202,7 +195,6 @@ Sample `System.IO.FileSystem.pkgproj`
 ```
 `unix/System.IO.FileSystem.pkgproj`
 ```
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/NuGet.config b/NuGet.config
index 64d3096df406..19216154ac91 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <!-- Don't use any higher level config files.
        Our builds need to be isolated from user/machine state -->
diff --git a/build.proj b/build.proj
index 3b0b184cab32..8cec9068fff5 100644
--- a/build.proj
+++ b/build.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
 
   <Import Project="Directory.Build.props" />
diff --git a/eng/Build.props b/eng/Build.props
index 220f70514250..71feaecf8884 100644
--- a/eng/Build.props
+++ b/eng/Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <RestoreUsingNuGetTargets>false</RestoreUsingNuGetTargets>
diff --git a/eng/CodeAnalysis.targets b/eng/CodeAnalysis.targets
index 36578ba35af3..8a585a4e926f 100644
--- a/eng/CodeAnalysis.targets
+++ b/eng/CodeAnalysis.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- Need to keep in sync with Tools.props file. -->
diff --git a/eng/DisableSourceControlManagement.targets b/eng/DisableSourceControlManagement.targets
index 16d88bac9fa2..85148cbd94d9 100644
--- a/eng/DisableSourceControlManagement.targets
+++ b/eng/DisableSourceControlManagement.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <EnableSourceControlManagerQueries>false</EnableSourceControlManagerQueries>
diff --git a/eng/InternalTools.props b/eng/InternalTools.props
index 535feb10f6bb..db0a13dcae15 100644
--- a/eng/InternalTools.props
+++ b/eng/InternalTools.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="dependencies.props" />
 
diff --git a/eng/Packaging.props b/eng/Packaging.props
index 65d9f593eb4a..9639db07c41d 100644
--- a/eng/Packaging.props
+++ b/eng/Packaging.props
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageDescriptionFile>$(RepoRoot)pkg/descriptions.json</PackageDescriptionFile>
     <PackageLicenseFile>$(RepoRoot)LICENSE.TXT</PackageLicenseFile>
diff --git a/eng/ReferenceAssemblies.props b/eng/ReferenceAssemblies.props
index cc8d589442c5..d1f1cfd6d658 100644
--- a/eng/ReferenceAssemblies.props
+++ b/eng/ReferenceAssemblies.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <IsReferenceAssembly Condition="'$(IsReferenceAssembly)'=='' AND ($(MSBuildProjectFullPath.Contains('\ref\')) OR $(MSBuildProjectFullPath.Contains('/ref/')))">true</IsReferenceAssembly>
diff --git a/eng/Resources.targets b/eng/Resources.targets
index 600ec422bd4b..5df76a12cd69 100644
--- a/eng/Resources.targets
+++ b/eng/Resources.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <ResourcesSourceFileExtension Condition="'$(MSBuildProjectExtension)' == '.csproj'">.cs</ResourcesSourceFileExtension>
diff --git a/eng/Tools.props b/eng/Tools.props
index 15b408b143c6..82ca4e1cd393 100644
--- a/eng/Tools.props
+++ b/eng/Tools.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <RestoreSources Condition="'$(DotNetBuildOffline)' != 'true'">
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 0f4a5f87a7e9..bf99152bdb29 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
     <Dependency Name="Microsoft.NETCore.Runtime.CoreCLR" Version="3.0.0-preview4-27501-75">
diff --git a/eng/Versions.props b/eng/Versions.props
index 0cfc137635a5..f55d4027b36c 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- The .NET Core product branding version -->
diff --git a/eng/blockReflectionAttribute.targets b/eng/blockReflectionAttribute.targets
index b42b03020164..761f637cf528 100644
--- a/eng/blockReflectionAttribute.targets
+++ b/eng/blockReflectionAttribute.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <!--
       Defining __BlockReflectionAttribute indicates that the .NET Native toolchain should remove the metadata for all non-public APIs.
diff --git a/eng/codeOptimization.targets b/eng/codeOptimization.targets
index 1e09fde2b4f2..7c90deddadc9 100644
--- a/eng/codeOptimization.targets
+++ b/eng/codeOptimization.targets
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
 
   <PropertyGroup Condition="'$(ApplyPartialNgenOptimization)' == ''">
      <ApplyPartialNgenOptimization Condition="'$(IsReferenceAssembly)' == 'true'">false</ApplyPartialNgenOptimization>
diff --git a/eng/common/internal/Tools.csproj b/eng/common/internal/Tools.csproj
index 1a81ff906f6e..a5bcf66fd4ad 100644
--- a/eng/common/internal/Tools.csproj
+++ b/eng/common/internal/Tools.csproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
diff --git a/eng/configurations/archgroups.props b/eng/configurations/archgroups.props
index ec71889840db..0a1c73366ec8 100644
--- a/eng/configurations/archgroups.props
+++ b/eng/configurations/archgroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <ArchGroups Include="x86" />
     <ArchGroups Include="x64" />
diff --git a/eng/configurations/configurationgroups.props b/eng/configurations/configurationgroups.props
index 9b1a9f24ebf0..3cef5da59390 100644
--- a/eng/configurations/configurationgroups.props
+++ b/eng/configurations/configurationgroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <ConfigurationGroups Include="Debug" />
     <ConfigurationGroups Include="Release" />
diff --git a/eng/configurations/osgroups.props b/eng/configurations/osgroups.props
index ab25123edf5c..7f2a49cdd024 100644
--- a/eng/configurations/osgroups.props
+++ b/eng/configurations/osgroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <OSGroups Include="Windows_NT">
       <Imports>AnyOS</Imports>
diff --git a/eng/configurations/properties.props b/eng/configurations/properties.props
index 7cd77df99594..0f7876d4b166 100644
--- a/eng/configurations/properties.props
+++ b/eng/configurations/properties.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="osgroups.props"/>
   <Import Project="targetgroups.props"/>
diff --git a/eng/configurations/targetgroups.props b/eng/configurations/targetgroups.props
index 6e5589438fd3..bc9482979dea 100644
--- a/eng/configurations/targetgroups.props
+++ b/eng/configurations/targetgroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <TargetGroups Include="netcore50">
       <TargetFramework>netcore50</TargetFramework>
diff --git a/eng/depProj.targets b/eng/depProj.targets
index 65837dfc719a..11b70d940762 100644
--- a/eng/depProj.targets
+++ b/eng/depProj.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 ***********************************************************************************************
 depProj.targets
diff --git a/eng/dependencies.props b/eng/dependencies.props
index 818f02c5dd85..e4557e6fd044 100644
--- a/eng/dependencies.props
+++ b/eng/dependencies.props
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <!-- Source of truth for dependency tooling: the commit hash of the dotnet/versions master branch as of the last auto-upgrade. -->
 
   <!-- For detailed explanation of the reference versions see:
diff --git a/eng/dir.traversal.targets b/eng/dir.traversal.targets
index 0af9148603b8..c9bbb50c019e 100644
--- a/eng/dir.traversal.targets
+++ b/eng/dir.traversal.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
 
diff --git a/eng/disableUap.targets b/eng/disableUap.targets
index 34b067da396e..5e41100ef838 100644
--- a/eng/disableUap.targets
+++ b/eng/disableUap.targets
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <Target Name="RemoveUapvNextContent"
           Condition="'$(KeepUAPContent)' != 'true'"
           DependsOnTargets="GetPackageReport"
diff --git a/eng/illink.targets b/eng/illink.targets
index 207a1a2588e2..0953c64ce210 100644
--- a/eng/illink.targets
+++ b/eng/illink.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <TargetsTriggeredByCompilation Condition="'$(DesignTimeBuild)' != 'true'">
diff --git a/eng/referenceFromRuntime.targets b/eng/referenceFromRuntime.targets
index c538fed1fccb..e739943c31e8 100644
--- a/eng/referenceFromRuntime.targets
+++ b/eng/referenceFromRuntime.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Target Name="AddReferenceFromRuntimeForTests"
           AfterTargets="ResolveAssemblyReferences"
diff --git a/eng/resolveContract.targets b/eng/resolveContract.targets
index eedc7f2f063b..d550bca19201 100644
--- a/eng/resolveContract.targets
+++ b/eng/resolveContract.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup Condition="'$(IsSourceProject)' == 'true'">
     <ContractProject Condition="'$(ContractProject)' == ''">$(SourceDir)/$(MSBuildProjectName)/ref/$(MSBuildProjectName).csproj</ContractProject>
diff --git a/external/Directory.Build.props b/external/Directory.Build.props
index 675d77c3276f..34efcad7581b 100644
--- a/external/Directory.Build.props
+++ b/external/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <ContainsPackageReferences>true</ContainsPackageReferences>
diff --git a/external/Directory.Build.targets b/external/Directory.Build.targets
index 791d6eac981d..a4460fd36b6b 100644
--- a/external/Directory.Build.targets
+++ b/external/Directory.Build.targets
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.targets" />
 
   <PropertyGroup>
diff --git a/external/ILLink/Configurations.props b/external/ILLink/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/external/ILLink/Configurations.props
+++ b/external/ILLink/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/ILLink/ILLink.depproj b/external/ILLink/ILLink.depproj
index f74937b214a2..5049897cd56f 100644
--- a/external/ILLink/ILLink.depproj
+++ b/external/ILLink/ILLink.depproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netcoreapp1.1</TargetFramework>
diff --git a/external/SharedFrameworkValidation/harvestPackages.SharedFramework.depproj b/external/SharedFrameworkValidation/harvestPackages.SharedFramework.depproj
index b76393f5253e..61b0c442af7f 100644
--- a/external/SharedFrameworkValidation/harvestPackages.SharedFramework.depproj
+++ b/external/SharedFrameworkValidation/harvestPackages.SharedFramework.depproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <_LatestStable>1.1.2</_LatestStable>
diff --git a/external/binplacePackages/Configurations.props b/external/binplacePackages/Configurations.props
index 61206a2a9b0c..d72738d5e62e 100644
--- a/external/binplacePackages/Configurations.props
+++ b/external/binplacePackages/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       net461;
diff --git a/external/binplacePackages/binplacePackages.depproj b/external/binplacePackages/binplacePackages.depproj
index 674b86d443c7..0f6da524ca17 100644
--- a/external/binplacePackages/binplacePackages.depproj
+++ b/external/binplacePackages/binplacePackages.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <BinPlaceRef>true</BinPlaceRef>
     <BinPlaceRuntime>true</BinPlaceRuntime>
diff --git a/external/docs/Configurations.props b/external/docs/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/external/docs/Configurations.props
+++ b/external/docs/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/docs/docs.depproj b/external/docs/docs.depproj
index 5e7256fca49d..ea14300c2c0a 100644
--- a/external/docs/docs.depproj
+++ b/external/docs/docs.depproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputPath>$(XmlDocDir)</OutputPath>
diff --git a/external/harvestPackages/Configurations.props b/external/harvestPackages/Configurations.props
index 7ab520885354..a5bb838e9e01 100644
--- a/external/harvestPackages/Configurations.props
+++ b/external/harvestPackages/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       package;
diff --git a/external/harvestPackages/harvestPackages.depproj b/external/harvestPackages/harvestPackages.depproj
index 0195f57d98e8..03837d22892d 100644
--- a/external/harvestPackages/harvestPackages.depproj
+++ b/external/harvestPackages/harvestPackages.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
diff --git a/external/netcoreapp/Configurations.props b/external/netcoreapp/Configurations.props
index f84dae58a32f..c43aa43772f1 100644
--- a/external/netcoreapp/Configurations.props
+++ b/external/netcoreapp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp2.0;
diff --git a/external/netcoreapp/netcoreapp.depproj b/external/netcoreapp/netcoreapp.depproj
index 6405fd179d9a..6a991e590be5 100644
--- a/external/netcoreapp/netcoreapp.depproj
+++ b/external/netcoreapp/netcoreapp.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <!-- This project restores and publishes the targeting pack for specific versions of .NET Core.
        With this, we are able to compile assemblies against shipped, stable versions of .NET Core. -->
   <PropertyGroup>
diff --git a/external/netfx/Configurations.props b/external/netfx/Configurations.props
index 273f0b1d7b28..a9f2b3349f5e 100644
--- a/external/netfx/Configurations.props
+++ b/external/netfx/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <!-- Include netcoreapp since we need to generate facades between desktop and netcoreapp -->
     <BuildConfigurations>
diff --git a/external/netfx/netfx.depproj b/external/netfx/netfx.depproj
index 3ed3d972b04f..ccf87f90409c 100644
--- a/external/netfx/netfx.depproj
+++ b/external/netfx/netfx.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$(SourceDir)\shims\netfxreference.props" />
   <PropertyGroup>
     <BinPlaceRef>true</BinPlaceRef>
diff --git a/external/netstandard/Configurations.props b/external/netstandard/Configurations.props
index c9a0ea8704f1..2a793c3fe674 100644
--- a/external/netstandard/Configurations.props
+++ b/external/netstandard/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.0;
diff --git a/external/netstandard/netstandard.depproj b/external/netstandard/netstandard.depproj
index efc29e580c35..7e474bb52ef7 100644
--- a/external/netstandard/netstandard.depproj
+++ b/external/netstandard/netstandard.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <NETStandardVersion Condition="$(TargetFramework.StartsWith('netstandard'))">$(TargetFramework.SubString(11))</NETStandardVersion>
     <IsNETStandard1x Condition="$(NETStandardVersion.StartsWith('1.'))">true</IsNETStandard1x>
diff --git a/external/optimizationData/Configurations.props b/external/optimizationData/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/external/optimizationData/Configurations.props
+++ b/external/optimizationData/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/external/optimizationData/optimizationData.depproj b/external/optimizationData/optimizationData.depproj
index d591aea933e8..40a479570377 100644
--- a/external/optimizationData/optimizationData.depproj
+++ b/external/optimizationData/optimizationData.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <!-- Copy to IBC directory -->
     <OutputPath>$(IbcOptimizationDataDir)</OutputPath>
diff --git a/external/runtime/Configurations.props b/external/runtime/Configurations.props
index 9263470de952..a63f4d4d76df 100644
--- a/external/runtime/Configurations.props
+++ b/external/runtime/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/external/runtime/Directory.Build.props b/external/runtime/Directory.Build.props
index 7def185643f6..a86068c18c0f 100644
--- a/external/runtime/Directory.Build.props
+++ b/external/runtime/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <OutDirName>external.$(MSBuildProjectName)</OutDirName>
   </PropertyGroup>
diff --git a/external/runtime/runtime.depproj b/external/runtime/runtime.depproj
index 8fcbdbafe7ef..83dad8708613 100644
--- a/external/runtime/runtime.depproj
+++ b/external/runtime/runtime.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <RuntimeIdentifier>$(PackageRID)</RuntimeIdentifier>
     <NoWarn>$(NoWarn);NU1603;NU1605</NoWarn>
diff --git a/external/test-runtime/Configurations.props b/external/test-runtime/Configurations.props
index d9438571e663..d9c88a0605aa 100644
--- a/external/test-runtime/Configurations.props
+++ b/external/test-runtime/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/external/test-runtime/XUnit.Runtime.depproj b/external/test-runtime/XUnit.Runtime.depproj
index c0051e0d6792..02256e1073be 100644
--- a/external/test-runtime/XUnit.Runtime.depproj
+++ b/external/test-runtime/XUnit.Runtime.depproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup Condition="'$(TargetGroup)' == 'uap' OR '$(TargetGroup)' == 'uapaot'">
     <TargetFramework>netstandard2.0</TargetFramework>
diff --git a/external/tools/Configurations.props b/external/tools/Configurations.props
index 2ef91cefebf3..93d8aff55d97 100644
--- a/external/tools/Configurations.props
+++ b/external/tools/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/external/tools/tools.depproj b/external/tools/tools.depproj
index 07ef3af895fa..833a612af5ed 100644
--- a/external/tools/tools.depproj
+++ b/external/tools/tools.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputPath>$(ILAsmToolPath)</OutputPath>
     <EnableBinPlacing>false</EnableBinPlacing>
diff --git a/external/uap/Configurations.props b/external/uap/Configurations.props
index 02a0681c00de..a4dd681c869d 100644
--- a/external/uap/Configurations.props
+++ b/external/uap/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap10.0.16299;
diff --git a/external/uap/uap.depproj b/external/uap/uap.depproj
index 9864893ced85..1d9d5eff2df7 100644
--- a/external/uap/uap.depproj
+++ b/external/uap/uap.depproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <!-- This project restores and publishes the targeting pack for specific versions of UAP.
        With this, we are able to compile assemblies against shipped, stable versions of UAP. -->
diff --git a/external/winrt/Configurations.props b/external/winrt/Configurations.props
index eefe8864b972..1f9fd8f32f2a 100644
--- a/external/winrt/Configurations.props
+++ b/external/winrt/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/external/winrt/winrt.depproj b/external/winrt/winrt.depproj
index af8379459529..ee9e2f3fa7c0 100644
--- a/external/winrt/winrt.depproj
+++ b/external/winrt/winrt.depproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyName>Windows</AssemblyName>
     <TargetExt>.winmd</TargetExt>
diff --git a/pkg/Directory.Build.props b/pkg/Directory.Build.props
index a0cc683705e4..972590c539c4 100644
--- a/pkg/Directory.Build.props
+++ b/pkg/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="..\Directory.Build.props" />
 
diff --git a/pkg/Directory.Build.targets b/pkg/Directory.Build.targets
index 4d51514c464c..0c723a98dc9d 100644
--- a/pkg/Directory.Build.targets
+++ b/pkg/Directory.Build.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
 
   <Import Condition="'$(IsFrameworkPackage)' == 'true'" Project="frameworkPackage.targets" />
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props b/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
+++ b/pkg/Microsoft.NETCore.Platforms.Future/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.builds b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.builds
index ae7e66402da4..24c9f63af136 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.builds
+++ b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
index 7f138ed4175b..ad5fd4137d7b 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
+++ b/pkg/Microsoft.NETCore.Platforms.Future/Microsoft.NETCore.Platforms.Future.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>3.0.0</PackageVersion>
diff --git a/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props b/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
index ef64c73c34f8..ff4c96a23b82 100644
--- a/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
+++ b/pkg/Microsoft.NETCore.Platforms.Future/runtimeGroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <RuntimeGroup Include="unix">
       <Architectures>wasm</Architectures>
diff --git a/pkg/Microsoft.NETCore.Platforms/Configurations.props b/pkg/Microsoft.NETCore.Platforms/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/pkg/Microsoft.NETCore.Platforms/Configurations.props
+++ b/pkg/Microsoft.NETCore.Platforms/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.builds b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.builds
index c9e1b4e6f19e..327d80c26e9a 100644
--- a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.builds
+++ b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
index 6829b6b21c52..14f850102628 100644
--- a/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
+++ b/pkg/Microsoft.NETCore.Platforms/Microsoft.NETCore.Platforms.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>$(PlatformPackageVersion)</PackageVersion>
diff --git a/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props b/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
index 3331f3a7ad6a..a819d57ddc61 100644
--- a/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
+++ b/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <ItemGroup>
     <RuntimeGroup Include="unix">
       <Parent>any</Parent>
diff --git a/pkg/Microsoft.NETCore.Targets/Configurations.props b/pkg/Microsoft.NETCore.Targets/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/pkg/Microsoft.NETCore.Targets/Configurations.props
+++ b/pkg/Microsoft.NETCore.Targets/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.builds b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.builds
index 376697aee953..42decc25ce25 100644
--- a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.builds
+++ b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
index 753aff49c8bc..d57412478ead 100644
--- a/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
+++ b/pkg/Microsoft.NETCore.Targets/Microsoft.NETCore.Targets.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>3.0.0</PackageVersion>
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
index 894b4b2357a0..eb733ee25372 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.builds b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.builds
index a1f17ddca8f2..6b4709c62425 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.builds
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
index fb15c944ca58..ca5a4bb4515c 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/Microsoft.Private.CoreFx.NETCoreApp.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props b/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
index 5ad3f72e5d97..74cae03f39f9 100644
--- a/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
+++ b/pkg/Microsoft.Private.CoreFx.NETCoreApp/netcoreapp.rids.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <ItemGroup>
     <OfficialBuildRID Include="freebsd-x64" />
     <OfficialBuildRID Include="linux-arm">
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props b/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
index 2d43e728c4a8..ff7f8f8ec197 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
+++ b/pkg/Microsoft.Private.CoreFx.UAP/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.builds b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.builds
index 1ca8ac3fe6b0..56133fddfba9 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.builds
+++ b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
index 9583723fb7d9..0d0db1127939 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
+++ b/pkg/Microsoft.Private.CoreFx.UAP/Microsoft.Private.CoreFx.UAP.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>4.7.0</PackageVersion>
diff --git a/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props b/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
index dd44bb00e3c1..7db9c2168612 100644
--- a/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
+++ b/pkg/Microsoft.Private.CoreFx.UAP/uap.rids.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <ItemGroup>
     <OfficialBuildRID Include="win10-x86">
       <Platform>x86</Platform>
diff --git a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.builds b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.builds
index bd65eb0f44bb..69f418e38403 100644
--- a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.builds
+++ b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
index bc3a5af9346c..b9bd433bee7a 100644
--- a/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
+++ b/pkg/Microsoft.Private.PackageBaseline/Microsoft.Private.PackageBaseline.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <HarvestStablePackage>false</HarvestStablePackage>
diff --git a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.builds b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.builds
index a55a916998b8..17a7f1689029 100644
--- a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.builds
+++ b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
index 882774d3da25..3a414d24e68f 100644
--- a/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
+++ b/pkg/Microsoft.Windows.Compatibility.Shims/Microsoft.Windows.Compatibility.Shims.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.builds b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.builds
index a55a916998b8..17a7f1689029 100644
--- a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.builds
+++ b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
index e3d0b53d0673..81c0377d3164 100644
--- a/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
+++ b/pkg/Microsoft.Windows.Compatibility/Microsoft.Windows.Compatibility.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
       <!-- We use the PackageVersion property defined in Packaging.props for the Prerelease packages which are using it to be built -->
diff --git a/pkg/dir.traversal.targets b/pkg/dir.traversal.targets
index 0eb5a4fcb6ca..c3864734a02e 100644
--- a/pkg/dir.traversal.targets
+++ b/pkg/dir.traversal.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$(RepositoryEngineeringDir)dir.traversal.targets" />
 
diff --git a/pkg/frameworkPackage.targets b/pkg/frameworkPackage.targets
index a58cb47d1749..1c0abf101f06 100644
--- a/pkg/frameworkPackage.targets
+++ b/pkg/frameworkPackage.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project InitialTargets="_CheckForFiles;IncludeFiles;SetValidateFramework">
 
   <PropertyGroup>
diff --git a/pkg/runtime.native.System.IO.Ports/Configurations.props b/pkg/runtime.native.System.IO.Ports/Configurations.props
index 6644453ed1d6..19236e72c58f 100644
--- a/pkg/runtime.native.System.IO.Ports/Configurations.props
+++ b/pkg/runtime.native.System.IO.Ports/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props b/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
index 60d2f971d231..5aae9f146203 100644
--- a/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
+++ b/pkg/runtime.native.System.IO.Ports/netcoreapp.rids.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <ItemGroup>
     <BuildRID Include="linux-arm">
       <Platform>arm</Platform>
diff --git a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.builds b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.builds
index a1f17ddca8f2..6b4709c62425 100644
--- a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.builds
+++ b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
index ff53b07f0bcd..58327c22b6f6 100644
--- a/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
+++ b/pkg/runtime.native.System.IO.Ports/runtime.native.System.IO.Ports.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <SkipPackageFileCheck>true</SkipPackageFileCheck>
diff --git a/pkg/test/frameworkSettings/net/settings.targets b/pkg/test/frameworkSettings/net/settings.targets
index c86bd2718f0a..25b7f5936bc7 100644
--- a/pkg/test/frameworkSettings/net/settings.targets
+++ b/pkg/test/frameworkSettings/net/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- Desktop has cycles and dangling refs -->
diff --git a/pkg/test/frameworkSettings/netcoreapp/settings.targets b/pkg/test/frameworkSettings/netcoreapp/settings.targets
index 8986eba9606a..ce47469c3e06 100644
--- a/pkg/test/frameworkSettings/netcoreapp/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$(ToolsDir)netfxreference.props" />
 
diff --git a/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
index be848aefc2c1..ac52538bb26a 100644
--- a/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp1.0/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <IgnoredTypes Include="System.Collections.StructuralComparisons" />
diff --git a/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets b/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
index 7aa64a3dea29..f1a20b8a5143 100644
--- a/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp1.1/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <IgnoredTypes Include="System.Collections.StructuralComparisons" />
diff --git a/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
index 8aa000e2c976..4cfa63c93a5f 100644
--- a/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp2.0/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup Condition="'$(RuntimeIdentifier)' != ''">
     <!-- NETCoreApp2.0 had experimental versions of Span and ReadOnlySpan 
diff --git a/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets b/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
index 4bbce61895ee..9a0c2d3fbd72 100644
--- a/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
+++ b/pkg/test/frameworkSettings/netcoreapp3.0/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- Enable targeting netcoreapp3.0 even in an older CLI -->
diff --git a/pkg/test/frameworkSettings/netstandard/settings.targets b/pkg/test/frameworkSettings/netstandard/settings.targets
index 68305493f2e5..af593ca8234c 100644
--- a/pkg/test/frameworkSettings/netstandard/settings.targets
+++ b/pkg/test/frameworkSettings/netstandard/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$(ToolsDir)netfxreference.props" />
 
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
index 7bf46da54d9a..46711d099365 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp2.2/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
index 7bf46da54d9a..46711d099365 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Platforms/netcoreapp3.0/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
index c79977c94ac9..ff1cfb8ab255 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.0/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- This package intentionally drops all runtime-package mappings from runtime.json -->
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
index c79977c94ac9..ff1cfb8ab255 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp1.1/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- This package intentionally drops all runtime-package mappings from runtime.json -->
diff --git a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
index 7bf46da54d9a..46711d099365 100644
--- a/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
+++ b/pkg/test/packageSettings/Microsoft.NETCore.Targets/netcoreapp2.2/settings.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <!-- This package will generate validation issues since we usually try to consume same-day packages from corefx that will have a higher
diff --git a/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Buffers/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
index 989e43508676..fdb725fd625f 100644
--- a/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
+++ b/pkg/test/packageSettings/System.Diagnostics.DiagnosticSource/workaroundMissingSystemMemory.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 
 <!-- This file is a work-around and should be removed by 6/2019 (by then a fixed version of System.Memory
      should be available so that System.Memory does not reference NetStandard1.X)
diff --git a/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.IO.Packaging/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
index b3275ae56359..2a4b06900c28 100644
--- a/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.IO.Ports/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit.ILGeneration/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit.Lightweight/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.Emit/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Reflection.TypeExtensions/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Runtime.CompilerServices.Unsafe/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Runtime.WindowsRuntime/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.Cng/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.OpenSsl/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Cryptography.Pkcs/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Security.Principal.Windows/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets b/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
index 9792feb31f8c..183497464be9 100644
--- a/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
+++ b/pkg/test/packageSettings/System.Threading.Tasks.Extensions/netcoreapp1.0/workaroundDowngrade.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <!-- issue https://github.com/dotnet/corefx/issues/28551 -->
diff --git a/pkg/test/packageTest.targets b/pkg/test/packageTest.targets
index 49df79b9a7ab..d0f78b37cc08 100644
--- a/pkg/test/packageTest.targets
+++ b/pkg/test/packageTest.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
 
   <PropertyGroup>
diff --git a/pkg/test/props/Directory.Build.props b/pkg/test/props/Directory.Build.props
index 558a68d5a58f..436249c6a1c5 100644
--- a/pkg/test/props/Directory.Build.props
+++ b/pkg/test/props/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
     <ImportDirectoryBuildTargets>false</ImportDirectoryBuildTargets>
diff --git a/pkg/test/test.msbuild b/pkg/test/test.msbuild
index 800922198fb9..0c7921f69e63 100644
--- a/pkg/test/test.msbuild
+++ b/pkg/test/test.msbuild
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Restore;Test">
   <ItemGroup>
     <TestPackages Condition="'$(TestPackages)' != ''" Include="$(TestPackages)" />
diff --git a/pkg/test/testPackages.proj b/pkg/test/testPackages.proj
index 71eebd57419a..466c9005e835 100644
--- a/pkg/test/testPackages.proj
+++ b/pkg/test/testPackages.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/CodeAnalysis.ruleset b/src/CodeAnalysis.ruleset
index 8920fd2575a1..8384ea42d722 100644
--- a/src/CodeAnalysis.ruleset
+++ b/src/CodeAnalysis.ruleset
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RuleSet Name="Rules for Security Issues" Description="Code analysis rules for Security Issues." ToolsVersion="14.0">
+<RuleSet Name="Rules for Security Issues" Description="Code analysis rules for Security Issues." ToolsVersion="14.0">
   <Rules AnalyzerId="Desktop.Analyzers" RuleNamespace="Desktop.Analyzers">
     <Rule Id="CA5350" Action="Error" /> <!-- Do not use Weak/Broken cryptographic algorithms -->
     <Rule Id="CA5351" Action="Error" />
diff --git a/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems b/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
index 088b3b6f20e1..c33faf5d74c8 100644
--- a/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
+++ b/src/Common/src/CoreLib/System.Private.CoreLib.Shared.projitems
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project>
+<Project>
   <PropertyGroup>
     <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
     <HasSharedItems>true</HasSharedItems>
diff --git a/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets b/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
index 63d2480561ab..83240d82aa85 100644
--- a/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
+++ b/src/Common/src/System/Security/Cryptography/Asn1/AsnXml.targets
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <AsnXml />
   </PropertyGroup>
diff --git a/src/Common/src/System/Security/Cryptography/Asn1/asn.xsd b/src/Common/src/System/Security/Cryptography/Asn1/asn.xsd
index 17fd6e57e53d..df069ac188c7 100644
--- a/src/Common/src/System/Security/Cryptography/Asn1/asn.xsd
+++ b/src/Common/src/System/Security/Cryptography/Asn1/asn.xsd
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xs:schema id="asn"
+<xs:schema id="asn"
     targetNamespace="http://schemas.dot.net/asnxml/201808/"
     elementFormDefault="qualified"
     xmlns="http://schemas.dot.net/asnxml/201808/"
diff --git a/src/Common/src/System/Security/Cryptography/Asn1/asn.xslt b/src/Common/src/System/Security/Cryptography/Asn1/asn.xslt
index 64ebf7ab99ed..0ad62b9dbd2f 100644
--- a/src/Common/src/System/Security/Cryptography/Asn1/asn.xslt
+++ b/src/Common/src/System/Security/Cryptography/Asn1/asn.xslt
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xsl:stylesheet version="1.0"
+<xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns:asn="http://schemas.dot.net/asnxml/201808/"
diff --git a/src/Common/tests/Configurations.props b/src/Common/tests/Configurations.props
index 20e7ab532f10..1c0ceb0002ac 100644
--- a/src/Common/tests/Configurations.props
+++ b/src/Common/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/Common/tests/Performance/Configurations.props b/src/Common/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/Performance/Configurations.props
+++ b/src/Common/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/Performance/PerfRunner/Configurations.props b/src/Common/tests/Performance/PerfRunner/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/Performance/PerfRunner/Configurations.props
+++ b/src/Common/tests/Performance/PerfRunner/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/Resources/Strings.resx b/src/Common/tests/Resources/Strings.resx
index 12dadae384c4..398f58f4077e 100644
--- a/src/Common/tests/Resources/Strings.resx
+++ b/src/Common/tests/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props b/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
+++ b/src/Common/tests/System/Diagnostics/RemoteExecutorConsoleApp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
index 0f5fd332bfe0..240c4d9789ce 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/CoreFxNetCloudService.ccproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Cloud.cscfg b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Cloud.cscfg
index b86cecddd283..410b90b4dcc4 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Cloud.cscfg
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Cloud.cscfg
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <ServiceConfiguration serviceName="CoreFxNetCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration" osFamily="4" osVersion="*" schemaVersion="2015-04.2.6">
   <Role name="WebServer">
     <Certificates>
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Local.cscfg b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Local.cscfg
index 7b9e8a7aeb42..473d8b0ce2c9 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Local.cscfg
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceConfiguration.Local.cscfg
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <ServiceConfiguration serviceName="CoreFxNetCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration" osFamily="4" osVersion="*" schemaVersion="2015-04.2.6">
   <Role name="WebServer">
     <Certificates>
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceDefinition.csdef b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceDefinition.csdef
index ca934aa34d14..66e00f2fd780 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceDefinition.csdef
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ServiceDefinition.csdef
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ServiceDefinition name="CoreFxNetCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition" schemaVersion="2015-04.2.6">
+<ServiceDefinition name="CoreFxNetCloudService" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceDefinition" schemaVersion="2015-04.2.6">
   <WebRole name="WebServer" vmsize="Medium">
     <Certificates>
       <Certificate name="CoreFxNetCertificate" storeLocation="LocalMachine" storeName="My" />
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/WebServerContent/diagnostics.wadcfgx b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/WebServerContent/diagnostics.wadcfgx
index 4ff2f0a5be94..8ca93efc6ebd 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/WebServerContent/diagnostics.wadcfgx
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/WebServerContent/diagnostics.wadcfgx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<DiagnosticsConfiguration  xmlns="http://schemas.microsoft.com/ServiceHosting/2010/10/DiagnosticsConfiguration">
+<DiagnosticsConfiguration  xmlns="http://schemas.microsoft.com/ServiceHosting/2010/10/DiagnosticsConfiguration">
   <PublicConfig>
     <WadCfg>
       <DiagnosticMonitorConfiguration overallQuotaInMB="4096">
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ecf/WebServerContent/diagnostics.wadcfgx b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ecf/WebServerContent/diagnostics.wadcfgx
index b85e92a5fbae..df40d84e9c3b 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ecf/WebServerContent/diagnostics.wadcfgx
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/CoreFxNetCloudService/ecf/WebServerContent/diagnostics.wadcfgx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<DiagnosticsConfiguration xmlns="http://schemas.microsoft.com/ServiceHosting/2010/10/DiagnosticsConfiguration">
+<DiagnosticsConfiguration xmlns="http://schemas.microsoft.com/ServiceHosting/2010/10/DiagnosticsConfiguration">
   <PublicConfig xmlns="http://schemas.microsoft.com/ServiceHosting/2010/10/DiagnosticsConfiguration">
     <WadCfg>
       <DiagnosticMonitorConfiguration overallQuotaInMB="4096">
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
index cf97a7ffab76..3ae4f4ddb4b6 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Debug.config b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Debug.config
index 2e302f9f9548..392bd6ae1652 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Debug.config
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Debug.config
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 
 <!-- For more information on using web.config transformation visit http://go.microsoft.com/fwlink/?LinkId=125889 -->
 
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Release.config b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Release.config
index c35844462ba8..eac2ffb30d72 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Release.config
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/Web.Release.config
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 
 <!-- For more information on using web.config transformation visit http://go.microsoft.com/fwlink/?LinkId=125889 -->
 
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
index 5f55ec1cebc1..78aa99045a6f 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/WebServer.csproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.1.0.0\build\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props" Condition="Exists('..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.1.0.0\build\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" />
   <Import Project="..\packages\Microsoft.Net.Compilers.1.0.0\build\Microsoft.Net.Compilers.props" Condition="Exists('..\packages\Microsoft.Net.Compilers.1.0.0\build\Microsoft.Net.Compilers.props')" />
diff --git a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/packages.config b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/packages.config
index 8bc1d558d2b4..d0a39047efb5 100644
--- a/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/packages.config
+++ b/src/Common/tests/System/Net/Prerequisites/Servers/CoreFxNetCloudService/WebServer/packages.config
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
+<packages>
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.0" targetFramework="net452" />
   <package id="Microsoft.Data.Edm" version="5.8.4" targetFramework="net452" />
   <package id="Microsoft.Data.OData" version="5.8.4" targetFramework="net452" />
diff --git a/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props b/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
+++ b/src/Common/tests/System/Xml/BaseLibManaged/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/ModuleCore/Configurations.props b/src/Common/tests/System/Xml/ModuleCore/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/System/Xml/ModuleCore/Configurations.props
+++ b/src/Common/tests/System/Xml/ModuleCore/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/XPath/TestData/Single_byte_problem_chars_b.xml b/src/Common/tests/System/Xml/XPath/TestData/Single_byte_problem_chars_b.xml
index 2ac831e004a4..15132370c3a8 100644
--- a/src/Common/tests/System/Xml/XPath/TestData/Single_byte_problem_chars_b.xml
+++ b/src/Common/tests/System/Xml/XPath/TestData/Single_byte_problem_chars_b.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
 8-bit Problem Characters
 <V>öÜß</V>
 <V>© ®</V>
diff --git a/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props b/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
+++ b/src/Common/tests/System/Xml/XmlCoreTest/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/System/Xml/XmlDiff/Configurations.props b/src/Common/tests/System/Xml/XmlDiff/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/Common/tests/System/Xml/XmlDiff/Configurations.props
+++ b/src/Common/tests/System/Xml/XmlDiff/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Common/tests/Tests.props b/src/Common/tests/Tests.props
index 02daf7528301..523cdbd598e8 100644
--- a/src/Common/tests/Tests.props
+++ b/src/Common/tests/Tests.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <CommonPath>$(MSBuildThisFileDirectory)</CommonPath>
   </PropertyGroup>
diff --git a/src/CoreFx.Private.TestUtilities/Directory.Build.props b/src/CoreFx.Private.TestUtilities/Directory.Build.props
index 974aa00ff4c5..c5ab443b5884 100644
--- a/src/CoreFx.Private.TestUtilities/Directory.Build.props
+++ b/src/CoreFx.Private.TestUtilities/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>1.0.1.0</AssemblyVersion>
diff --git a/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj b/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
index 136965d49c6a..791dee1c043f 100644
--- a/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
+++ b/src/CoreFx.Private.TestUtilities/pkg/CoreFx.Private.TestUtilities.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/CoreFx.Private.TestUtilities/ref/Configurations.props b/src/CoreFx.Private.TestUtilities/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/CoreFx.Private.TestUtilities/ref/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/CoreFx.Private.TestUtilities/src/Configurations.props b/src/CoreFx.Private.TestUtilities/src/Configurations.props
index 8907aa12d5d3..80a36c009e40 100644
--- a/src/CoreFx.Private.TestUtilities/src/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/CoreFx.Private.TestUtilities/tests/Configurations.props b/src/CoreFx.Private.TestUtilities/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/CoreFx.Private.TestUtilities/tests/Configurations.props
+++ b/src/CoreFx.Private.TestUtilities/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 5ecef089e9c0..6653ddf22175 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <EnableDefaultItems>false</EnableDefaultItems>
diff --git a/src/Directory.Build.targets b/src/Directory.Build.targets
index 52981adae3d6..49cde574fb18 100644
--- a/src/Directory.Build.targets
+++ b/src/Directory.Build.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project InitialTargets="AddSkipGetTargetFrameworkToProjectReferences">
   <PropertyGroup>
     <!-- Reset these properties back to blank, since they are defaulted by Microsoft.NET.Sdk -->
diff --git a/src/Microsoft.CSharp/Directory.Build.props b/src/Microsoft.CSharp/Directory.Build.props
index c1845f50ce13..9162773bfdc6 100644
--- a/src/Microsoft.CSharp/Directory.Build.props
+++ b/src/Microsoft.CSharp/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj b/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
index 620cf7c68093..fa5eeffcc974 100644
--- a/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
+++ b/src/Microsoft.CSharp/pkg/Microsoft.CSharp.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.CSharp.csproj">
diff --git a/src/Microsoft.CSharp/ref/Configurations.props b/src/Microsoft.CSharp/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/Microsoft.CSharp/ref/Configurations.props
+++ b/src/Microsoft.CSharp/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.CSharp/src/Configurations.props b/src/Microsoft.CSharp/src/Configurations.props
index 1bfc3dbdee70..aee5c900a4d1 100644
--- a/src/Microsoft.CSharp/src/Configurations.props
+++ b/src/Microsoft.CSharp/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.de.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.de.xlf
index f2350e0aae60..3f030fd1ef80 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.de.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.de.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="de" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.es.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.es.xlf
index f5128c16afb2..53ab8a18ecb6 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.es.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.es.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="es" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.fr.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.fr.xlf
index 25c37d054402..0801eab4e540 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.fr.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.fr.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="fr" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.it.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.it.xlf
index eb6fe0ba866f..892ee9ebe84a 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.it.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.it.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="it" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ja.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ja.xlf
index 9e6c29c4b0f3..3caea15ebc8e 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ja.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ja.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="ja" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ko.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ko.xlf
index 2fcdbc47dcb6..17869b19b0ac 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ko.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ko.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="ko" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ru.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ru.xlf
index c4c5974901da..cb80c34e81d9 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ru.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.ru.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="ru" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hans.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hans.xlf
index 17983cffcc2c..f4041b65f715 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hans.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hans.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="zh-Hans" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hant.xlf b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hant.xlf
index cb8b34242228..54fd05e4457a 100644
--- a/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hant.xlf
+++ b/src/Microsoft.CSharp/src/MultilingualResources/Microsoft.CSharp.zh-Hant.xlf
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:oasis:names:tc:xliff:document:1.2 xliff-core-1.2-transitional.xsd">
   <file datatype="xml" source-language="en-US" target-language="zh-Hant" original="MICROSOFT.CSHARP/RESOURCES/STRINGS.RESX" tool-id="MultilingualAppToolkit" product-name="n/a" product-version="n/a" build-num="n/a">
     <header>
       <tool tool-id="MultilingualAppToolkit" tool-name="Multilingual App Toolkit" tool-version="4.0.1387.0" tool-company="Microsoft" />
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.de.resx b/src/Microsoft.CSharp/src/Resources/Strings.de.resx
index 38d09851f47c..b0d7654ee177 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.de.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.de.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.es.resx b/src/Microsoft.CSharp/src/Resources/Strings.es.resx
index 2ecf6454cb44..5d52e7921f15 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.es.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.es.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.fr.resx b/src/Microsoft.CSharp/src/Resources/Strings.fr.resx
index 4879b314dcb7..f17f30b1343e 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.fr.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.fr.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.it.resx b/src/Microsoft.CSharp/src/Resources/Strings.it.resx
index 4c215fcd6523..9a6f5b39e4cc 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.it.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.it.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.ja.resx b/src/Microsoft.CSharp/src/Resources/Strings.ja.resx
index 3807dae9958f..49105ba018da 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.ja.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.ja.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.ko.resx b/src/Microsoft.CSharp/src/Resources/Strings.ko.resx
index 609342acc16b..1feb81cae3b9 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.ko.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.ko.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.resx b/src/Microsoft.CSharp/src/Resources/Strings.resx
index 6eee65a87e7d..851a8493b49e 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.ru.resx b/src/Microsoft.CSharp/src/Resources/Strings.ru.resx
index 78b66c55fb66..bec63aad5035 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.ru.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.ru.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.zh-Hans.resx b/src/Microsoft.CSharp/src/Resources/Strings.zh-Hans.resx
index 65ecb7fc0210..32aa4e0a62fb 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.zh-Hans.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.zh-Hans.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/src/Resources/Strings.zh-Hant.resx b/src/Microsoft.CSharp/src/Resources/Strings.zh-Hant.resx
index 0517ad500ed3..5d0e3a634bf0 100644
--- a/src/Microsoft.CSharp/src/Resources/Strings.zh-Hant.resx
+++ b/src/Microsoft.CSharp/src/Resources/Strings.zh-Hant.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.CSharp/tests/Configurations.props b/src/Microsoft.CSharp/tests/Configurations.props
index 093f19aa9028..38a2a87a19e0 100644
--- a/src/Microsoft.CSharp/tests/Configurations.props
+++ b/src/Microsoft.CSharp/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
index abf2951770e1..ffff611f7ba9 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>2.1.0</PackageVersion>
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
index 1319b1ce6bf3..dea1571c9930 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/pkg/Microsoft.Diagnostics.Tracing.EventSource.Redist.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
index 95a5449d6814..f592aee34ee0 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       net461-Windows_NT;
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Resources/Strings.resx b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Resources/Strings.resx
index 498fcb5070aa..bf2f61e56bdc 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Resources/Strings.resx
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
index 3ea059827001..49ac1a3ca38e 100644
--- a/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
+++ b/src/Microsoft.Diagnostics.Tracing.EventSource.Redist/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Microsoft.IO.Redist/Directory.Build.props b/src/Microsoft.IO.Redist/Directory.Build.props
index 62606e4d167b..2bf586c0917d 100644
--- a/src/Microsoft.IO.Redist/Directory.Build.props
+++ b/src/Microsoft.IO.Redist/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj b/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
index c6fb4d0bdb04..891ad82b2b27 100644
--- a/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
+++ b/src/Microsoft.IO.Redist/pkg/Microsoft.IO.Redist.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\Microsoft.IO.Redist.csproj">
diff --git a/src/Microsoft.IO.Redist/src/Configurations.props b/src/Microsoft.IO.Redist/src/Configurations.props
index 9112d19431d1..c535e27185f2 100644
--- a/src/Microsoft.IO.Redist/src/Configurations.props
+++ b/src/Microsoft.IO.Redist/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Microsoft.IO.Redist/src/Resources/Strings.resx b/src/Microsoft.IO.Redist/src/Resources/Strings.resx
index 061aefdc8b6a..d5c13cece767 100644
--- a/src/Microsoft.IO.Redist/src/Resources/Strings.resx
+++ b/src/Microsoft.IO.Redist/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <resheader name="resmimetype">
     <value>text/microsoft-resx</value>
   </resheader>
diff --git a/src/Microsoft.VisualBasic.Core/ref/Configurations.props b/src/Microsoft.VisualBasic.Core/ref/Configurations.props
index 8fbfed8adee6..2b2323d47917 100644
--- a/src/Microsoft.VisualBasic.Core/ref/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/src/Configurations.props b/src/Microsoft.VisualBasic.Core/src/Configurations.props
index 8dceccd6a7a8..cba16a40137d 100644
--- a/src/Microsoft.VisualBasic.Core/src/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/src/Resources/Strings.resx b/src/Microsoft.VisualBasic.Core/src/Resources/Strings.resx
index 0344cfb720b3..1c5480af0799 100644
--- a/src/Microsoft.VisualBasic.Core/src/Resources/Strings.resx
+++ b/src/Microsoft.VisualBasic.Core/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/Microsoft.VisualBasic.Core/tests/Configurations.props b/src/Microsoft.VisualBasic.Core/tests/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/Microsoft.VisualBasic.Core/tests/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props b/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
+++ b/src/Microsoft.VisualBasic.Core/tests/VB/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.Win32.Primitives/Directory.Build.props b/src/Microsoft.Win32.Primitives/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/Microsoft.Win32.Primitives/Directory.Build.props
+++ b/src/Microsoft.Win32.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Primitives/ref/Configurations.props b/src/Microsoft.Win32.Primitives/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/Microsoft.Win32.Primitives/ref/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/Microsoft.Win32.Primitives/src/Configurations.props b/src/Microsoft.Win32.Primitives/src/Configurations.props
index f612570ae28e..421f137c2465 100644
--- a/src/Microsoft.Win32.Primitives/src/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/Microsoft.Win32.Primitives/tests/Configurations.props b/src/Microsoft.Win32.Primitives/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/Microsoft.Win32.Primitives/tests/Configurations.props
+++ b/src/Microsoft.Win32.Primitives/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props b/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
index 38448e58868c..98004a4badf7 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj b/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
index 47492fa6bb1f..bda29fe7f223 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
+++ b/src/Microsoft.Win32.Registry.AccessControl/pkg/Microsoft.Win32.Registry.AccessControl.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.Registry.AccessControl.csproj">
diff --git a/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
index 4f11d6b6ba32..db5ea45241c0 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
index 7147eef7a3f6..07902e9a0855 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry.AccessControl/src/Resources/Strings.resx b/src/Microsoft.Win32.Registry.AccessControl/src/Resources/Strings.resx
index fdd06141be92..d603314000c1 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/src/Resources/Strings.resx
+++ b/src/Microsoft.Win32.Registry.AccessControl/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props b/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
index 1af4d0816e72..c84dc3ce914a 100644
--- a/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
+++ b/src/Microsoft.Win32.Registry.AccessControl/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry/Directory.Build.props b/src/Microsoft.Win32.Registry/Directory.Build.props
index ff313e503168..7de773a482ac 100644
--- a/src/Microsoft.Win32.Registry/Directory.Build.props
+++ b/src/Microsoft.Win32.Registry/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj b/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
index 95e031c2982a..c4c49d5de043 100644
--- a/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
+++ b/src/Microsoft.Win32.Registry/pkg/Microsoft.Win32.Registry.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.Registry.csproj">
diff --git a/src/Microsoft.Win32.Registry/ref/Configurations.props b/src/Microsoft.Win32.Registry/ref/Configurations.props
index 2a7570a4d9b5..ed1dc44dd487 100644
--- a/src/Microsoft.Win32.Registry/ref/Configurations.props
+++ b/src/Microsoft.Win32.Registry/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.Registry/src/Configurations.props b/src/Microsoft.Win32.Registry/src/Configurations.props
index abb6062ffae4..b38bf271d1bb 100644
--- a/src/Microsoft.Win32.Registry/src/Configurations.props
+++ b/src/Microsoft.Win32.Registry/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard-Windows_NT;
diff --git a/src/Microsoft.Win32.Registry/src/Resources/Strings.resx b/src/Microsoft.Win32.Registry/src/Resources/Strings.resx
index 0930c0b761db..1b789a467723 100644
--- a/src/Microsoft.Win32.Registry/src/Resources/Strings.resx
+++ b/src/Microsoft.Win32.Registry/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/Microsoft.Win32.Registry/tests/Configurations.props b/src/Microsoft.Win32.Registry/tests/Configurations.props
index 899049fcb776..d2b1d4d5d861 100644
--- a/src/Microsoft.Win32.Registry/tests/Configurations.props
+++ b/src/Microsoft.Win32.Registry/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.Win32.SystemEvents/Directory.Build.props b/src/Microsoft.Win32.SystemEvents/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/Microsoft.Win32.SystemEvents/Directory.Build.props
+++ b/src/Microsoft.Win32.SystemEvents/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj b/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
index 635999808755..9620ccc82c5d 100644
--- a/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
+++ b/src/Microsoft.Win32.SystemEvents/pkg/Microsoft.Win32.SystemEvents.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\Microsoft.Win32.SystemEvents.csproj">
diff --git a/src/Microsoft.Win32.SystemEvents/ref/Configurations.props b/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
index 2a7570a4d9b5..ed1dc44dd487 100644
--- a/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.SystemEvents/src/Configurations.props b/src/Microsoft.Win32.SystemEvents/src/Configurations.props
index fab86b2ccfac..9fa6530c8284 100644
--- a/src/Microsoft.Win32.SystemEvents/src/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/Microsoft.Win32.SystemEvents/src/Resources/Strings.resx b/src/Microsoft.Win32.SystemEvents/src/Resources/Strings.resx
index 99fcf24d207f..96464aac30db 100644
--- a/src/Microsoft.Win32.SystemEvents/src/Resources/Strings.resx
+++ b/src/Microsoft.Win32.SystemEvents/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/Microsoft.Win32.SystemEvents/tests/Configurations.props b/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
index 899049fcb776..d2b1d4d5d861 100644
--- a/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
+++ b/src/Microsoft.Win32.SystemEvents/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/Microsoft.XmlSerializer.Generator/Directory.Build.props b/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
index 0ae708cac855..041f284a79f8 100644
--- a/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
+++ b/src/Microsoft.XmlSerializer.Generator/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>2.1.0</PackageVersion>
diff --git a/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets b/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
index 5e8e54cbc3dd..f05f8de21128 100644
--- a/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
+++ b/src/Microsoft.XmlSerializer.Generator/pkg/GenerateNupkgProps.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
       <BuildDependsOn>
@@ -16,7 +15,7 @@
   <Target Name="GenerateNupkgProps" DependsOnTargets="CalculatePackageVersion">
     <PropertyGroup>
       <PropsFileContents>
-&lt;Project DefaultTargets="Build"&gt;
+&lt;Project&gt;
   &lt;ItemGroup&gt;
     &lt;DotNetCliToolReference Include="$(Id)" Version="$(PackageVersion)" /&gt;
   &lt;/ItemGroup&gt;
diff --git a/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj b/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
index d8e65d2edcc8..4ea022d5a0f1 100644
--- a/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
+++ b/src/Microsoft.XmlSerializer.Generator/pkg/Microsoft.XmlSerializer.Generator.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\Microsoft.XmlSerializer.Generator.csproj" />
diff --git a/src/Microsoft.XmlSerializer.Generator/src/Configurations.props b/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
+++ b/src/Microsoft.XmlSerializer.Generator/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets b/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
index 310537677026..6bf1617711b2 100644
--- a/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
+++ b/src/Microsoft.XmlSerializer.Generator/src/GenerateThisAssemblyCs.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <Compile Include="$(IntermediateOutputPath)\ThisAssembly.cs"/>
diff --git a/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props b/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
index 4d4d801bc7b7..24c315971e49 100644
--- a/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
+++ b/src/Microsoft.XmlSerializer.Generator/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/Native/build-native.proj b/src/Native/build-native.proj
index 0fff3494ab1d..0edf486adf52 100644
--- a/src/Native/build-native.proj
+++ b/src/Native/build-native.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
 
diff --git a/src/Native/native-binplace.proj b/src/Native/native-binplace.proj
index b7deeceee93f..93b1c676b5e5 100644
--- a/src/Native/native-binplace.proj
+++ b/src/Native/native-binplace.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/Native/pkg/Directory.Build.props b/src/Native/pkg/Directory.Build.props
index 7515317c917b..5e626177d1b2 100644
--- a/src/Native/pkg/Directory.Build.props
+++ b/src/Native/pkg/Directory.Build.props
@@ -1,4 +1,4 @@
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\..\Directory.Build.props" />
 
   <PropertyGroup>
diff --git a/src/Native/pkg/Directory.Build.targets b/src/Native/pkg/Directory.Build.targets
index 412c4ac7a2d1..61c4a1f65bf8 100644
--- a/src/Native/pkg/Directory.Build.targets
+++ b/src/Native/pkg/Directory.Build.targets
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
 
   <!-- Add path globs specific to native binaries to exclude unnecessary files from packages. -->
   <Choose>
diff --git a/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj b/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
index 909d433b2343..19cda6742339 100644
--- a/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
+++ b/src/Native/pkg/runtime.native.System.Data.SqlClient.sni/runtime.native.System.Data.SqlClient.sni.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <SkipPackageFileCheck>true</SkipPackageFileCheck>
diff --git a/src/SharedFrameworkValidation/RestoreSDKProject/NuGet.config b/src/SharedFrameworkValidation/RestoreSDKProject/NuGet.config
index 320ef145256b..9de882614dff 100644
--- a/src/SharedFrameworkValidation/RestoreSDKProject/NuGet.config
+++ b/src/SharedFrameworkValidation/RestoreSDKProject/NuGet.config
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <config>
     <add key="globalPackagesFolder" value="../../../packages" />
diff --git a/src/SharedFrameworkValidation/SharedFrameworkValidation.proj b/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
index da697391410e..d06ff26f656c 100644
--- a/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
+++ b/src/SharedFrameworkValidation/SharedFrameworkValidation.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/System.AppContext/Directory.Build.props b/src/System.AppContext/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.AppContext/Directory.Build.props
+++ b/src/System.AppContext/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.AppContext/ref/Configurations.props b/src/System.AppContext/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.AppContext/ref/Configurations.props
+++ b/src/System.AppContext/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.AppContext/src/Configurations.props b/src/System.AppContext/src/Configurations.props
index cab746f97ba8..5d1182962c9e 100644
--- a/src/System.AppContext/src/Configurations.props
+++ b/src/System.AppContext/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.AppContext/tests/Configurations.props b/src/System.AppContext/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.AppContext/tests/Configurations.props
+++ b/src/System.AppContext/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Buffers/Directory.Build.props b/src/System.Buffers/Directory.Build.props
index 54212ae92a33..009e8c675eef 100644
--- a/src/System.Buffers/Directory.Build.props
+++ b/src/System.Buffers/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Buffers/ref/Configurations.props b/src/System.Buffers/ref/Configurations.props
index bc2a72ba6a1a..fabb861dc645 100644
--- a/src/System.Buffers/ref/Configurations.props
+++ b/src/System.Buffers/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Buffers/src/Configurations.props b/src/System.Buffers/src/Configurations.props
index cab746f97ba8..5d1182962c9e 100644
--- a/src/System.Buffers/src/Configurations.props
+++ b/src/System.Buffers/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Buffers/src/Resources/Strings.resx b/src/System.Buffers/src/Resources/Strings.resx
index 83a1b5f6801d..452da4c65896 100644
--- a/src/System.Buffers/src/Resources/Strings.resx
+++ b/src/System.Buffers/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Buffers/tests/Configurations.props b/src/System.Buffers/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Buffers/tests/Configurations.props
+++ b/src/System.Buffers/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.CodeDom/Directory.Build.props b/src/System.CodeDom/Directory.Build.props
index fb0aa67477c5..c63e87ea233c 100644
--- a/src/System.CodeDom/Directory.Build.props
+++ b/src/System.CodeDom/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.CodeDom/pkg/System.CodeDom.pkgproj b/src/System.CodeDom/pkg/System.CodeDom.pkgproj
index 3b75cc06f75c..69615ec0f3e9 100644
--- a/src/System.CodeDom/pkg/System.CodeDom.pkgproj
+++ b/src/System.CodeDom/pkg/System.CodeDom.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.CodeDom.csproj">
diff --git a/src/System.CodeDom/ref/Configurations.props b/src/System.CodeDom/ref/Configurations.props
index 2fa00762c2f0..35d1514b2b73 100644
--- a/src/System.CodeDom/ref/Configurations.props
+++ b/src/System.CodeDom/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       net461;
diff --git a/src/System.CodeDom/src/Configurations.props b/src/System.CodeDom/src/Configurations.props
index 2fa00762c2f0..35d1514b2b73 100644
--- a/src/System.CodeDom/src/Configurations.props
+++ b/src/System.CodeDom/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       net461;
diff --git a/src/System.CodeDom/src/Resources/Strings.resx b/src/System.CodeDom/src/Resources/Strings.resx
index 4458b9cd7bd1..fdf82e7bcd44 100644
--- a/src/System.CodeDom/src/Resources/Strings.resx
+++ b/src/System.CodeDom/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.CodeDom/tests/Configurations.props b/src/System.CodeDom/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.CodeDom/tests/Configurations.props
+++ b/src/System.CodeDom/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.Concurrent/Directory.Build.props b/src/System.Collections.Concurrent/Directory.Build.props
index a2fa3bc188f2..d50127f8cc55 100644
--- a/src/System.Collections.Concurrent/Directory.Build.props
+++ b/src/System.Collections.Concurrent/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.14.0</AssemblyVersion>
diff --git a/src/System.Collections.Concurrent/ref/Configurations.props b/src/System.Collections.Concurrent/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Collections.Concurrent/ref/Configurations.props
+++ b/src/System.Collections.Concurrent/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections.Concurrent/src/Configurations.props b/src/System.Collections.Concurrent/src/Configurations.props
index ef6e1be3142c..4002bb571203 100644
--- a/src/System.Collections.Concurrent/src/Configurations.props
+++ b/src/System.Collections.Concurrent/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Collections.Concurrent/src/Resources/Strings.resx b/src/System.Collections.Concurrent/src/Resources/Strings.resx
index e32a9a254ce7..3656beacd5d8 100644
--- a/src/System.Collections.Concurrent/src/Resources/Strings.resx
+++ b/src/System.Collections.Concurrent/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Collections.Concurrent/tests/Configurations.props b/src/System.Collections.Concurrent/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Collections.Concurrent/tests/Configurations.props
+++ b/src/System.Collections.Concurrent/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.Concurrent/tests/Performance/Configurations.props b/src/System.Collections.Concurrent/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Collections.Concurrent/tests/Performance/Configurations.props
+++ b/src/System.Collections.Concurrent/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.Immutable/Directory.Build.props b/src/System.Collections.Immutable/Directory.Build.props
index 5ea645887bc8..7e38210d72ee 100644
--- a/src/System.Collections.Immutable/Directory.Build.props
+++ b/src/System.Collections.Immutable/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>1.6.0</PackageVersion>
diff --git a/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj b/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
index 28b233c41720..6a57dbc57883 100644
--- a/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
+++ b/src/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <PropertyGroup>
     <!-- we need to be supported on pre-nuget-3 platforms (Dev12, Dev11, etc) -->
diff --git a/src/System.Collections.Immutable/ref/Configurations.props b/src/System.Collections.Immutable/ref/Configurations.props
index 5cc4ed8860bf..3e0bc47bafe1 100644
--- a/src/System.Collections.Immutable/ref/Configurations.props
+++ b/src/System.Collections.Immutable/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard1.0;
diff --git a/src/System.Collections.Immutable/src/Configurations.props b/src/System.Collections.Immutable/src/Configurations.props
index 5cc4ed8860bf..3e0bc47bafe1 100644
--- a/src/System.Collections.Immutable/src/Configurations.props
+++ b/src/System.Collections.Immutable/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard1.0;
diff --git a/src/System.Collections.Immutable/src/Interfaces.cd b/src/System.Collections.Immutable/src/Interfaces.cd
index 3466abc0fc07..1dd8ef3cd0b8 100644
--- a/src/System.Collections.Immutable/src/Interfaces.cd
+++ b/src/System.Collections.Immutable/src/Interfaces.cd
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ClassDiagram MajorVersion="1" MinorVersion="1">
+<ClassDiagram MajorVersion="1" MinorVersion="1">
   <Interface Name="System.Collections.Generic.IHashKeyCollection&lt;TKey&gt;">
     <Position X="12.75" Y="0.5" Width="1.75" />
     <TypeIdentifier>
diff --git a/src/System.Collections.Immutable/src/Resources/Strings.resx b/src/System.Collections.Immutable/src/Resources/Strings.resx
index c7caeb7f255b..7bdc72cf7192 100644
--- a/src/System.Collections.Immutable/src/Resources/Strings.resx
+++ b/src/System.Collections.Immutable/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Collections.Immutable/tests/ClassDiagram1.cd b/src/System.Collections.Immutable/tests/ClassDiagram1.cd
index 336a3bbf0052..c29506429b82 100644
--- a/src/System.Collections.Immutable/tests/ClassDiagram1.cd
+++ b/src/System.Collections.Immutable/tests/ClassDiagram1.cd
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ClassDiagram MajorVersion="1" MinorVersion="1">
+<ClassDiagram MajorVersion="1" MinorVersion="1">
   <Class Name="System.Collections.Immutable.Test.ImmutableListBuilderTest" Collapsed="true">
     <Position X="0.5" Y="6.25" Width="2" />
     <TypeIdentifier>
diff --git a/src/System.Collections.Immutable/tests/Configurations.props b/src/System.Collections.Immutable/tests/Configurations.props
index 95f2aee4ed8c..a83bb569e75c 100644
--- a/src/System.Collections.Immutable/tests/Configurations.props
+++ b/src/System.Collections.Immutable/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.NonGeneric/Directory.Build.props b/src/System.Collections.NonGeneric/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Collections.NonGeneric/Directory.Build.props
+++ b/src/System.Collections.NonGeneric/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections.NonGeneric/ref/Configurations.props b/src/System.Collections.NonGeneric/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Collections.NonGeneric/ref/Configurations.props
+++ b/src/System.Collections.NonGeneric/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections.NonGeneric/src/Configurations.props b/src/System.Collections.NonGeneric/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.Collections.NonGeneric/src/Configurations.props
+++ b/src/System.Collections.NonGeneric/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Collections.NonGeneric/src/Resources/Strings.resx b/src/System.Collections.NonGeneric/src/Resources/Strings.resx
index 81bcc1aebfc5..c2f3eb1c61be 100644
--- a/src/System.Collections.NonGeneric/src/Resources/Strings.resx
+++ b/src/System.Collections.NonGeneric/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Collections.NonGeneric/tests/Configurations.props b/src/System.Collections.NonGeneric/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Collections.NonGeneric/tests/Configurations.props
+++ b/src/System.Collections.NonGeneric/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.NonGeneric/tests/Performance/Configurations.props b/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
+++ b/src/System.Collections.NonGeneric/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections.Specialized/Directory.Build.props b/src/System.Collections.Specialized/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Collections.Specialized/Directory.Build.props
+++ b/src/System.Collections.Specialized/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections.Specialized/ref/Configurations.props b/src/System.Collections.Specialized/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Collections.Specialized/ref/Configurations.props
+++ b/src/System.Collections.Specialized/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections.Specialized/src/Configurations.props b/src/System.Collections.Specialized/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.Collections.Specialized/src/Configurations.props
+++ b/src/System.Collections.Specialized/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Collections.Specialized/src/Resources/Strings.resx b/src/System.Collections.Specialized/src/Resources/Strings.resx
index 0c6f48498c15..cf4551989393 100644
--- a/src/System.Collections.Specialized/src/Resources/Strings.resx
+++ b/src/System.Collections.Specialized/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Collections.Specialized/tests/Configurations.props b/src/System.Collections.Specialized/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Collections.Specialized/tests/Configurations.props
+++ b/src/System.Collections.Specialized/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Collections/Directory.Build.props b/src/System.Collections/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Collections/Directory.Build.props
+++ b/src/System.Collections/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Collections/ref/Configurations.props b/src/System.Collections/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Collections/ref/Configurations.props
+++ b/src/System.Collections/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections/src/Configurations.props b/src/System.Collections/src/Configurations.props
index 5f04e4fc0a36..78e091b28e29 100644
--- a/src/System.Collections/src/Configurations.props
+++ b/src/System.Collections/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Collections/src/Resources/Strings.resx b/src/System.Collections/src/Resources/Strings.resx
index 0e07b69ee9ef..d9e1f7000db7 100644
--- a/src/System.Collections/src/Resources/Strings.resx
+++ b/src/System.Collections/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Collections/tests/Configurations.props b/src/System.Collections/tests/Configurations.props
index 2c27f0d86a22..e43964ecf9e7 100644
--- a/src/System.Collections/tests/Configurations.props
+++ b/src/System.Collections/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Collections/tests/Performance/Configurations.props b/src/System.Collections/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Collections/tests/Performance/Configurations.props
+++ b/src/System.Collections/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Annotations/Directory.Build.props b/src/System.ComponentModel.Annotations/Directory.Build.props
index dd7c9f8da62b..11d031df69da 100644
--- a/src/System.ComponentModel.Annotations/Directory.Build.props
+++ b/src/System.ComponentModel.Annotations/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.2.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj b/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
index 52a83ad23198..d514410f7cfc 100644
--- a/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
+++ b/src/System.ComponentModel.Annotations/pkg/System.ComponentModel.Annotations.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.ComponentModel.Annotations.csproj">
diff --git a/src/System.ComponentModel.Annotations/ref/Configurations.props b/src/System.ComponentModel.Annotations/ref/Configurations.props
index 4f11d6b6ba32..db5ea45241c0 100644
--- a/src/System.ComponentModel.Annotations/ref/Configurations.props
+++ b/src/System.ComponentModel.Annotations/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Annotations/src/Configurations.props b/src/System.ComponentModel.Annotations/src/Configurations.props
index 73653a383a8b..9c9b9ab5178f 100644
--- a/src/System.ComponentModel.Annotations/src/Configurations.props
+++ b/src/System.ComponentModel.Annotations/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
    	<PackageConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Annotations/src/Resources/Strings.resx b/src/System.ComponentModel.Annotations/src/Resources/Strings.resx
index 65a0ec1a2c02..e20eea0c0669 100644
--- a/src/System.ComponentModel.Annotations/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.Annotations/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.Annotations/tests/Configurations.props b/src/System.ComponentModel.Annotations/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.ComponentModel.Annotations/tests/Configurations.props
+++ b/src/System.ComponentModel.Annotations/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/Directory.Build.props b/src/System.ComponentModel.Composition.Registration/Directory.Build.props
index fc39df3d1e80..7b1204a4c720 100644
--- a/src/System.ComponentModel.Composition.Registration/Directory.Build.props
+++ b/src/System.ComponentModel.Composition.Registration/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj b/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
index 3ddc7512c707..4bc86a918ec2 100644
--- a/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
+++ b/src/System.ComponentModel.Composition.Registration/pkg/System.ComponentModel.Composition.Registration.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
     <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
     <ItemGroup>
diff --git a/src/System.ComponentModel.Composition.Registration/ref/Configurations.props b/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
index 95a420d5eabf..045fafbae1d8 100644
--- a/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/src/Configurations.props b/src/System.ComponentModel.Composition.Registration/src/Configurations.props
index 9a78db289070..ac2aa337a9d7 100644
--- a/src/System.ComponentModel.Composition.Registration/src/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition.Registration/src/Resources/Strings.resx b/src/System.ComponentModel.Composition.Registration/src/Resources/Strings.resx
index 24a2a1673efd..04e8ef95da5a 100644
--- a/src/System.ComponentModel.Composition.Registration/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.Composition.Registration/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.Composition.Registration/tests/Configurations.props b/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
index ee2ff4abfe62..992904366b4f 100644
--- a/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
+++ b/src/System.ComponentModel.Composition.Registration/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.Composition/Directory.Build.props b/src/System.ComponentModel.Composition/Directory.Build.props
index fc39df3d1e80..7b1204a4c720 100644
--- a/src/System.ComponentModel.Composition/Directory.Build.props
+++ b/src/System.ComponentModel.Composition/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj b/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
index 9af1bfd89306..4810c4975dcb 100644
--- a/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
+++ b/src/System.ComponentModel.Composition/pkg/System.ComponentModel.Composition.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.ComponentModel.Composition/ref/Configurations.props b/src/System.ComponentModel.Composition/ref/Configurations.props
index 95a420d5eabf..045fafbae1d8 100644
--- a/src/System.ComponentModel.Composition/ref/Configurations.props
+++ b/src/System.ComponentModel.Composition/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition/src/Configurations.props b/src/System.ComponentModel.Composition/src/Configurations.props
index 442af61adec4..f34fa036485a 100644
--- a/src/System.ComponentModel.Composition/src/Configurations.props
+++ b/src/System.ComponentModel.Composition/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Composition/src/Resources/Strings.resx b/src/System.ComponentModel.Composition/src/Resources/Strings.resx
index 2308b2c45dee..8899ffb3aab2 100644
--- a/src/System.ComponentModel.Composition/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.Composition/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.Composition/tests/Configurations.props b/src/System.ComponentModel.Composition/tests/Configurations.props
index ee2ff4abfe62..992904366b4f 100644
--- a/src/System.ComponentModel.Composition/tests/Configurations.props
+++ b/src/System.ComponentModel.Composition/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props b/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
index 4c35b6322355..febffb03ac69 100644
--- a/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
+++ b/src/System.ComponentModel.Composition/tests/System.ComponentModel.Composition.Noop.Assembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.EventBasedAsync/Directory.Build.props b/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
+++ b/src/System.ComponentModel.EventBasedAsync/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props b/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.EventBasedAsync/src/Configurations.props b/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.ComponentModel.EventBasedAsync/src/Resources/Strings.resx b/src/System.ComponentModel.EventBasedAsync/src/Resources/Strings.resx
index d9dce28e6af9..86c96d308b8d 100644
--- a/src/System.ComponentModel.EventBasedAsync/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.EventBasedAsync/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props b/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
+++ b/src/System.ComponentModel.EventBasedAsync/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.Primitives/Directory.Build.props b/src/System.ComponentModel.Primitives/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.ComponentModel.Primitives/Directory.Build.props
+++ b/src/System.ComponentModel.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.Primitives/ref/Configurations.props b/src/System.ComponentModel.Primitives/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.ComponentModel.Primitives/ref/Configurations.props
+++ b/src/System.ComponentModel.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.Primitives/src/Configurations.props b/src/System.ComponentModel.Primitives/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.ComponentModel.Primitives/src/Configurations.props
+++ b/src/System.ComponentModel.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.ComponentModel.Primitives/src/Resources/Strings.resx b/src/System.ComponentModel.Primitives/src/Resources/Strings.resx
index e1b8f5bef324..4d59c7826080 100644
--- a/src/System.ComponentModel.Primitives/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.Primitives/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.Primitives/tests/Configurations.props b/src/System.ComponentModel.Primitives/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.ComponentModel.Primitives/tests/Configurations.props
+++ b/src/System.ComponentModel.Primitives/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.TypeConverter/Directory.Build.props b/src/System.ComponentModel.TypeConverter/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.ComponentModel.TypeConverter/Directory.Build.props
+++ b/src/System.ComponentModel.TypeConverter/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.ComponentModel.TypeConverter/ref/Configurations.props b/src/System.ComponentModel.TypeConverter/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.ComponentModel.TypeConverter/ref/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.TypeConverter/src/Configurations.props b/src/System.ComponentModel.TypeConverter/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.ComponentModel.TypeConverter/src/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.ComponentModel.TypeConverter/src/Resources/Strings.resx b/src/System.ComponentModel.TypeConverter/src/Resources/Strings.resx
index dd8dc95fd5d1..e2b4d67a4ae1 100644
--- a/src/System.ComponentModel.TypeConverter/src/Resources/Strings.resx
+++ b/src/System.ComponentModel.TypeConverter/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel.TypeConverter/tests/Configurations.props b/src/System.ComponentModel.TypeConverter/tests/Configurations.props
index bc04a198c0c8..caa171561192 100644
--- a/src/System.ComponentModel.TypeConverter/tests/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props b/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props
+++ b/src/System.ComponentModel.TypeConverter/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel.TypeConverter/tests/Resources/TestResx.resx b/src/System.ComponentModel.TypeConverter/tests/Resources/TestResx.resx
index a088c94d9025..fe736cdd9c37 100644
--- a/src/System.ComponentModel.TypeConverter/tests/Resources/TestResx.resx
+++ b/src/System.ComponentModel.TypeConverter/tests/Resources/TestResx.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ComponentModel/Directory.Build.props b/src/System.ComponentModel/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
--- a/src/System.ComponentModel/Directory.Build.props
+++ b/src/System.ComponentModel/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.ComponentModel/ref/Configurations.props b/src/System.ComponentModel/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.ComponentModel/ref/Configurations.props
+++ b/src/System.ComponentModel/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel/src/Configurations.props b/src/System.ComponentModel/src/Configurations.props
index 296b296ee218..aa1d34875976 100644
--- a/src/System.ComponentModel/src/Configurations.props
+++ b/src/System.ComponentModel/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ComponentModel/tests/Configurations.props b/src/System.ComponentModel/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.ComponentModel/tests/Configurations.props
+++ b/src/System.ComponentModel/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.AttributedModel/Directory.Build.props b/src/System.Composition.AttributedModel/Directory.Build.props
index 797c3bcf88d9..d8220fc41439 100644
--- a/src/System.Composition.AttributedModel/Directory.Build.props
+++ b/src/System.Composition.AttributedModel/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj b/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
index 5ac478c92528..09e6802a073c 100644
--- a/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
+++ b/src/System.Composition.AttributedModel/pkg/System.Composition.AttributedModel.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.AttributedModel.csproj">
diff --git a/src/System.Composition.AttributedModel/src/Configurations.props b/src/System.Composition.AttributedModel/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.AttributedModel/src/Configurations.props
+++ b/src/System.Composition.AttributedModel/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.AttributedModel/tests/Configurations.props b/src/System.Composition.AttributedModel/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.AttributedModel/tests/Configurations.props
+++ b/src/System.Composition.AttributedModel/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Convention/Directory.Build.props b/src/System.Composition.Convention/Directory.Build.props
index 797c3bcf88d9..d8220fc41439 100644
--- a/src/System.Composition.Convention/Directory.Build.props
+++ b/src/System.Composition.Convention/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj b/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
index fd9b4bd16718..e6113b0da773 100644
--- a/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
+++ b/src/System.Composition.Convention/pkg/System.Composition.Convention.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.Convention.csproj">
diff --git a/src/System.Composition.Convention/src/Configurations.props b/src/System.Composition.Convention/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Convention/src/Configurations.props
+++ b/src/System.Composition.Convention/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Convention/src/Resources/Strings.resx b/src/System.Composition.Convention/src/Resources/Strings.resx
index 47a24e433934..b25ecac2f8d3 100644
--- a/src/System.Composition.Convention/src/Resources/Strings.resx
+++ b/src/System.Composition.Convention/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Composition.Convention/tests/Configurations.props b/src/System.Composition.Convention/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Convention/tests/Configurations.props
+++ b/src/System.Composition.Convention/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Hosting/Directory.Build.props b/src/System.Composition.Hosting/Directory.Build.props
index 797c3bcf88d9..d8220fc41439 100644
--- a/src/System.Composition.Hosting/Directory.Build.props
+++ b/src/System.Composition.Hosting/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj b/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
index ced6bbd4145b..90d5d5850b1d 100644
--- a/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
+++ b/src/System.Composition.Hosting/pkg/System.Composition.Hosting.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.Hosting.csproj">
diff --git a/src/System.Composition.Hosting/src/Configurations.props b/src/System.Composition.Hosting/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Hosting/src/Configurations.props
+++ b/src/System.Composition.Hosting/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Hosting/src/Resources/Strings.resx b/src/System.Composition.Hosting/src/Resources/Strings.resx
index 9fc699ace16d..22472e694e68 100644
--- a/src/System.Composition.Hosting/src/Resources/Strings.resx
+++ b/src/System.Composition.Hosting/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
diff --git a/src/System.Composition.Hosting/tests/Configurations.props b/src/System.Composition.Hosting/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Hosting/tests/Configurations.props
+++ b/src/System.Composition.Hosting/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Runtime/Directory.Build.props b/src/System.Composition.Runtime/Directory.Build.props
index 797c3bcf88d9..d8220fc41439 100644
--- a/src/System.Composition.Runtime/Directory.Build.props
+++ b/src/System.Composition.Runtime/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj b/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
index 34d34f43d175..0390368522f9 100644
--- a/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
+++ b/src/System.Composition.Runtime/pkg/System.Composition.Runtime.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.Runtime.csproj">
diff --git a/src/System.Composition.Runtime/src/Configurations.props b/src/System.Composition.Runtime/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Runtime/src/Configurations.props
+++ b/src/System.Composition.Runtime/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.Runtime/src/Resources/Strings.resx b/src/System.Composition.Runtime/src/Resources/Strings.resx
index 3e1348ac7fd9..cb3c61703e2a 100644
--- a/src/System.Composition.Runtime/src/Resources/Strings.resx
+++ b/src/System.Composition.Runtime/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Composition.Runtime/tests/Configurations.props b/src/System.Composition.Runtime/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.Runtime/tests/Configurations.props
+++ b/src/System.Composition.Runtime/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.TypedParts/Directory.Build.props b/src/System.Composition.TypedParts/Directory.Build.props
index 797c3bcf88d9..d8220fc41439 100644
--- a/src/System.Composition.TypedParts/Directory.Build.props
+++ b/src/System.Composition.TypedParts/Directory.Build.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\System.Composition\Directory.Build.props" />
 </Project>
\ No newline at end of file
diff --git a/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj b/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
index 4c32458ea342..481b13255c7b 100644
--- a/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
+++ b/src/System.Composition.TypedParts/pkg/System.Composition.TypedParts.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Composition.TypedParts.csproj">
diff --git a/src/System.Composition.TypedParts/src/Configurations.props b/src/System.Composition.TypedParts/src/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.TypedParts/src/Configurations.props
+++ b/src/System.Composition.TypedParts/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition.TypedParts/src/Resources/Strings.resx b/src/System.Composition.TypedParts/src/Resources/Strings.resx
index 616b99291ae8..2e7c6c9499b7 100644
--- a/src/System.Composition.TypedParts/src/Resources/Strings.resx
+++ b/src/System.Composition.TypedParts/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Composition.TypedParts/tests/Configurations.props b/src/System.Composition.TypedParts/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition.TypedParts/tests/Configurations.props
+++ b/src/System.Composition.TypedParts/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/Directory.Build.props b/src/System.Composition/Directory.Build.props
index 4768adf50cac..d0a8e4dc55da 100644
--- a/src/System.Composition/Directory.Build.props
+++ b/src/System.Composition/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <PackageVersion>1.3.0</PackageVersion>
diff --git a/src/System.Composition/pkg/System.Composition.pkgproj b/src/System.Composition/pkg/System.Composition.pkgproj
index 84a6fd576471..88dc92c67e41 100644
--- a/src/System.Composition/pkg/System.Composition.pkgproj
+++ b/src/System.Composition/pkg/System.Composition.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\..\System.Composition.AttributedModel\pkg\System.Composition.AttributedModel.pkgproj" />
diff --git a/src/System.Composition/tests/Configurations.props b/src/System.Composition/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Composition/tests/Configurations.props
+++ b/src/System.Composition/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props b/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
+++ b/src/System.Composition/tests/Microsoft.Composition.Demos.ExtendedCollectionImports/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Composition/tests/TestLibrary/Configurations.props b/src/System.Composition/tests/TestLibrary/Configurations.props
index 935ac21e0d9c..016bde99d64f 100644
--- a/src/System.Composition/tests/TestLibrary/Configurations.props
+++ b/src/System.Composition/tests/TestLibrary/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.3;
diff --git a/src/System.Configuration.ConfigurationManager/Directory.Build.props b/src/System.Configuration.ConfigurationManager/Directory.Build.props
index fb0aa67477c5..c63e87ea233c 100644
--- a/src/System.Configuration.ConfigurationManager/Directory.Build.props
+++ b/src/System.Configuration.ConfigurationManager/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj b/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
index fe577f749b93..bb9bf2cdaedb 100644
--- a/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
+++ b/src/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Configuration.ConfigurationManager.csproj">
diff --git a/src/System.Configuration.ConfigurationManager/ref/Configurations.props b/src/System.Configuration.ConfigurationManager/ref/Configurations.props
index 5d3db5425432..9f1896f9a51a 100644
--- a/src/System.Configuration.ConfigurationManager/ref/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Configuration.ConfigurationManager/src/Configurations.props b/src/System.Configuration.ConfigurationManager/src/Configurations.props
index d791a96d76ad..414c9fc84c87 100644
--- a/src/System.Configuration.ConfigurationManager/src/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Configuration.ConfigurationManager/src/Resources/Strings.resx b/src/System.Configuration.ConfigurationManager/src/Resources/Strings.resx
index 0b60d872dffc..2dd95efcdbe2 100644
--- a/src/System.Configuration.ConfigurationManager/src/Resources/Strings.resx
+++ b/src/System.Configuration.ConfigurationManager/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Configuration.ConfigurationManager/tests/Configurations.props b/src/System.Configuration.ConfigurationManager/tests/Configurations.props
index 1f3bbe25f4e2..a0590ba3b109 100644
--- a/src/System.Configuration.ConfigurationManager/tests/Configurations.props
+++ b/src/System.Configuration.ConfigurationManager/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Configuration.ConfigurationManager/tests/Resources/Strings.resx b/src/System.Configuration.ConfigurationManager/tests/Resources/Strings.resx
index 822bc4e70046..217537dd1166 100644
--- a/src/System.Configuration.ConfigurationManager/tests/Resources/Strings.resx
+++ b/src/System.Configuration.ConfigurationManager/tests/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema
 
diff --git a/src/System.Console/Directory.Build.props b/src/System.Console/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Console/Directory.Build.props
+++ b/src/System.Console/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Console/ref/Configurations.props b/src/System.Console/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Console/ref/Configurations.props
+++ b/src/System.Console/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Console/src/Configurations.props b/src/System.Console/src/Configurations.props
index f612570ae28e..421f137c2465 100644
--- a/src/System.Console/src/Configurations.props
+++ b/src/System.Console/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Console/src/Resources/Strings.resx b/src/System.Console/src/Resources/Strings.resx
index 97a99e5d4c54..6f16c49d115b 100644
--- a/src/System.Console/src/Resources/Strings.resx
+++ b/src/System.Console/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Console/tests/Configurations.props b/src/System.Console/tests/Configurations.props
index 6bee8a499b4c..04de91de0325 100644
--- a/src/System.Console/tests/Configurations.props
+++ b/src/System.Console/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Console/tests/Performance/Configurations.props b/src/System.Console/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Console/tests/Performance/Configurations.props
+++ b/src/System.Console/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.Common/Directory.Build.props b/src/System.Data.Common/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Data.Common/Directory.Build.props
+++ b/src/System.Data.Common/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Data.Common/ref/Configurations.props b/src/System.Data.Common/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Data.Common/ref/Configurations.props
+++ b/src/System.Data.Common/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Data.Common/src/Configurations.props b/src/System.Data.Common/src/Configurations.props
index d84d411d0233..bb4021beefea 100644
--- a/src/System.Data.Common/src/Configurations.props
+++ b/src/System.Data.Common/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Data.Common/src/Resources/Strings.resx b/src/System.Data.Common/src/Resources/Strings.resx
index 39443576d30c..8bdbcac03521 100644
--- a/src/System.Data.Common/src/Resources/Strings.resx
+++ b/src/System.Data.Common/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Data.Common/src/Resources/System.Data.Common.rd.xml b/src/System.Data.Common/src/Resources/System.Data.Common.rd.xml
index 75ce7eef5fb7..952bdbed1459 100644
--- a/src/System.Data.Common/src/Resources/System.Data.Common.rd.xml
+++ b/src/System.Data.Common/src/Resources/System.Data.Common.rd.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
   <Library>
     <!-- TODO there are probably more directives necessary -->
diff --git a/src/System.Data.Common/tests/Configurations.props b/src/System.Data.Common/tests/Configurations.props
index 2c27f0d86a22..e43964ecf9e7 100644
--- a/src/System.Data.Common/tests/Configurations.props
+++ b/src/System.Data.Common/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Data.DataSetExtensions/Directory.Build.props b/src/System.Data.DataSetExtensions/Directory.Build.props
index 2ff5413b04e1..0985cc9c5fdf 100644
--- a/src/System.Data.DataSetExtensions/Directory.Build.props
+++ b/src/System.Data.DataSetExtensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj b/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
index e60f4faf31f9..2f97767836c1 100644
--- a/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
+++ b/src/System.Data.DataSetExtensions/pkg/System.Data.DataSetExtensions.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Data.DataSetExtensions.csproj">
diff --git a/src/System.Data.DataSetExtensions/ref/Configurations.props b/src/System.Data.DataSetExtensions/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Data.DataSetExtensions/ref/Configurations.props
+++ b/src/System.Data.DataSetExtensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.DataSetExtensions/src/Configurations.props b/src/System.Data.DataSetExtensions/src/Configurations.props
index 1bfc3dbdee70..aee5c900a4d1 100644
--- a/src/System.Data.DataSetExtensions/src/Configurations.props
+++ b/src/System.Data.DataSetExtensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.DataSetExtensions/src/Resources/Strings.resx b/src/System.Data.DataSetExtensions/src/Resources/Strings.resx
index 32ce22b2377a..6ab7f24dcd22 100644
--- a/src/System.Data.DataSetExtensions/src/Resources/Strings.resx
+++ b/src/System.Data.DataSetExtensions/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Data.DataSetExtensions/tests/Configurations.props b/src/System.Data.DataSetExtensions/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Data.DataSetExtensions/tests/Configurations.props
+++ b/src/System.Data.DataSetExtensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.Odbc/Directory.Build.props b/src/System.Data.Odbc/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Data.Odbc/Directory.Build.props
+++ b/src/System.Data.Odbc/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj b/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
index 7fadb9c6be89..71616c034917 100644
--- a/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
+++ b/src/System.Data.Odbc/pkg/System.Data.Odbc.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Data.Odbc.csproj">
diff --git a/src/System.Data.Odbc/ref/Configurations.props b/src/System.Data.Odbc/ref/Configurations.props
index 2a7570a4d9b5..ed1dc44dd487 100644
--- a/src/System.Data.Odbc/ref/Configurations.props
+++ b/src/System.Data.Odbc/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.Odbc/src/Configurations.props b/src/System.Data.Odbc/src/Configurations.props
index 09c917c7d274..3430266fd638 100644
--- a/src/System.Data.Odbc/src/Configurations.props
+++ b/src/System.Data.Odbc/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0-FreeBSD;
diff --git a/src/System.Data.Odbc/src/Resources/Strings.resx b/src/System.Data.Odbc/src/Resources/Strings.resx
index 60e59fb70ae4..1208e92193fb 100644
--- a/src/System.Data.Odbc/src/Resources/Strings.resx
+++ b/src/System.Data.Odbc/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Data.Odbc/tests/Configurations.props b/src/System.Data.Odbc/tests/Configurations.props
index 9e9725d659f3..88f254cfa6fa 100644
--- a/src/System.Data.Odbc/tests/Configurations.props
+++ b/src/System.Data.Odbc/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Data.SqlClient/Directory.Build.props b/src/System.Data.SqlClient/Directory.Build.props
index e0468d819f86..11dfd9dcef1e 100644
--- a/src/System.Data.SqlClient/Directory.Build.props
+++ b/src/System.Data.SqlClient/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- Must be kept in sync with pkg\Microsoft.Windows.Compatibility\Microsoft.Windows.Compatibility.pkgproj -->
diff --git a/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj b/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
index db992865ad67..807212a50d24 100644
--- a/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
+++ b/src/System.Data.SqlClient/pkg/System.Data.SqlClient.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Data.SqlClient.csproj">
diff --git a/src/System.Data.SqlClient/ref/Configurations.props b/src/System.Data.SqlClient/ref/Configurations.props
index 36e46c549c24..329687c1cd22 100644
--- a/src/System.Data.SqlClient/ref/Configurations.props
+++ b/src/System.Data.SqlClient/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.1;
diff --git a/src/System.Data.SqlClient/src/Configurations.props b/src/System.Data.SqlClient/src/Configurations.props
index 83c30b2067bf..d0c7b4674c9b 100644
--- a/src/System.Data.SqlClient/src/Configurations.props
+++ b/src/System.Data.SqlClient/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard-Unix;
diff --git a/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets b/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
index aebf66f5726a..a01191f8d4aa 100644
--- a/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
+++ b/src/System.Data.SqlClient/src/GenerateThisAssemblyCs.targets
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <ItemGroup>
     <Compile Include="$(IntermediateOutputPath)\ThisAssembly.cs"/>
diff --git a/src/System.Data.SqlClient/src/Resources/Strings.resx b/src/System.Data.SqlClient/src/Resources/Strings.resx
index 73f9579ea2c1..ee6fbd18c2d1 100644
--- a/src/System.Data.SqlClient/src/Resources/Strings.resx
+++ b/src/System.Data.SqlClient/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props b/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
index 27ee17721c42..7639596dc4d7 100644
--- a/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/FunctionalTests/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/ManualTests/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
index 4c35b6322355..febffb03ac69 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
index 5823430bd1d2..b6252750f8e5 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Address/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
index 5823430bd1d2..b6252750f8e5 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Circle/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
index 5823430bd1d2..b6252750f8e5 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Shapes/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
index 5823430bd1d2..b6252750f8e5 100644
--- a/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
+++ b/src/System.Data.SqlClient/tests/ManualTests/SQL/UdtTest/UDTs/Utf8String/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/IMonitorLoader/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.SqlClient.Stress.Tests/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressFramework/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
+++ b/src/System.Data.SqlClient/tests/StressTests/System.Data.StressRunner/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.EndPoint/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS.Servers/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props b/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
index 21dfd499e0b8..24168e5ec571 100644
--- a/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
+++ b/src/System.Data.SqlClient/tests/Tools/TDS/TDS/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.Contracts/Directory.Build.props b/src/System.Diagnostics.Contracts/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
--- a/src/System.Diagnostics.Contracts/Directory.Build.props
+++ b/src/System.Diagnostics.Contracts/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Contracts/ref/Configurations.props b/src/System.Diagnostics.Contracts/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.Contracts/ref/Configurations.props
+++ b/src/System.Diagnostics.Contracts/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Contracts/src/Configurations.props b/src/System.Diagnostics.Contracts/src/Configurations.props
index c4b354d18fcd..8e16bc6010c4 100644
--- a/src/System.Diagnostics.Contracts/src/Configurations.props
+++ b/src/System.Diagnostics.Contracts/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Diagnostics.Contracts/tests/Configurations.props b/src/System.Diagnostics.Contracts/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Diagnostics.Contracts/tests/Configurations.props
+++ b/src/System.Diagnostics.Contracts/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.Debug/Directory.Build.props b/src/System.Diagnostics.Debug/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Diagnostics.Debug/Directory.Build.props
+++ b/src/System.Diagnostics.Debug/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Debug/ref/Configurations.props b/src/System.Diagnostics.Debug/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.Debug/ref/Configurations.props
+++ b/src/System.Diagnostics.Debug/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Debug/src/Configurations.props b/src/System.Diagnostics.Debug/src/Configurations.props
index af2d398e8199..11c9656a5c73 100644
--- a/src/System.Diagnostics.Debug/src/Configurations.props
+++ b/src/System.Diagnostics.Debug/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Diagnostics.Debug/tests/Configurations.props b/src/System.Diagnostics.Debug/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Diagnostics.Debug/tests/Configurations.props
+++ b/src/System.Diagnostics.Debug/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.DiagnosticSource/Directory.Build.props b/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
index 01b8f26576bb..65e1cbec6f5e 100644
--- a/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
+++ b/src/System.Diagnostics.DiagnosticSource/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj b/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
index a78f1792d6df..eabb6507738e 100644
--- a/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
+++ b/src/System.Diagnostics.DiagnosticSource/pkg/System.Diagnostics.DiagnosticSource.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Diagnostics.DiagnosticSource.csproj">
diff --git a/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props b/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props
index 00eb7a3c650f..340d3b7658e7 100644
--- a/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props
+++ b/src/System.Diagnostics.DiagnosticSource/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard1.1;
diff --git a/src/System.Diagnostics.DiagnosticSource/src/Configurations.props b/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
index c3e21dcf2fb1..1b1cb95ce5f2 100644
--- a/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
+++ b/src/System.Diagnostics.DiagnosticSource/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard1.1;
diff --git a/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props b/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props
index 3f396acc8a01..7795d73e2860 100644
--- a/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props
+++ b/src/System.Diagnostics.DiagnosticSource/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.EventLog/Directory.Build.props b/src/System.Diagnostics.EventLog/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Diagnostics.EventLog/Directory.Build.props
+++ b/src/System.Diagnostics.EventLog/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj b/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
index 44584a8a9a99..3820dab528c8 100644
--- a/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
+++ b/src/System.Diagnostics.EventLog/pkg/System.Diagnostics.EventLog.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Diagnostics.EventLog.csproj">
diff --git a/src/System.Diagnostics.EventLog/ref/Configurations.props b/src/System.Diagnostics.EventLog/ref/Configurations.props
index 6e1c7cbda03a..cd2b80921363 100644
--- a/src/System.Diagnostics.EventLog/ref/Configurations.props
+++ b/src/System.Diagnostics.EventLog/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <BuildConfigurations>
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diff --git a/src/System.Diagnostics.EventLog/src/Configurations.props b/src/System.Diagnostics.EventLog/src/Configurations.props
index dd95055fb8ff..111337f10dd0 100644
--- a/src/System.Diagnostics.EventLog/src/Configurations.props
+++ b/src/System.Diagnostics.EventLog/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0-Windows_NT;
diff --git a/src/System.Diagnostics.EventLog/src/Resources/Strings.resx b/src/System.Diagnostics.EventLog/src/Resources/Strings.resx
index 43589ab7e277..ffeb7516c3a7 100644
--- a/src/System.Diagnostics.EventLog/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.EventLog/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
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diff --git a/src/System.Diagnostics.EventLog/tests/Configurations.props b/src/System.Diagnostics.EventLog/tests/Configurations.props
index 206336e6d841..79e917c19759 100644
--- a/src/System.Diagnostics.EventLog/tests/Configurations.props
+++ b/src/System.Diagnostics.EventLog/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.FileVersionInfo/Directory.Build.props b/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
index 761e10102c4d..21df61f36c2f 100644
--- a/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
+++ b/src/System.Diagnostics.FileVersionInfo/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props b/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.FileVersionInfo/src/Configurations.props b/src/System.Diagnostics.FileVersionInfo/src/Configurations.props
index 969a8d8272d0..1ad17d8810ab 100644
--- a/src/System.Diagnostics.FileVersionInfo/src/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.FileVersionInfo/src/Resources/Strings.resx b/src/System.Diagnostics.FileVersionInfo/src/Resources/Strings.resx
index 5cd9017f5ef2..2d12230d118f 100644
--- a/src/System.Diagnostics.FileVersionInfo/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.FileVersionInfo/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
index 1f3bbe25f4e2..7e0dbee015fb 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
index 459b6b284dda..0a0d5639da8d 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeConsoleApp/NativeConsoleApp.vcxproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
index 1f3bbe25f4e2..7e0dbee015fb 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
index 5493db5e4084..f47779afedd5 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/NativeLibrary/NativeLibrary.vcxproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
index 1f3bbe25f4e2..7e0dbee015fb 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
index d5a5a226c4a5..d7f4fd3c53eb 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
+++ b/src/System.Diagnostics.FileVersionInfo/tests/SecondNativeLibrary/SecondNativeLibrary.vcxproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup Label="ProjectConfigurations">
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
index 1f3bbe25f4e2..7e0dbee015fb 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.TestAssembly/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
index cef03dd79bb6..b37136c85ac8 100644
--- a/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
+++ b/src/System.Diagnostics.FileVersionInfo/tests/System.Diagnostics.FileVersionInfo.Tests/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Diagnostics.PerformanceCounter/Directory.Build.props b/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
+++ b/src/System.Diagnostics.PerformanceCounter/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj b/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
index 529cf1c3312b..e33760550c8e 100644
--- a/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
+++ b/src/System.Diagnostics.PerformanceCounter/pkg/System.Diagnostics.PerformanceCounter.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
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diff --git a/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props b/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
index afde24870c12..f3d0f8ba0f71 100644
--- a/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       net461;
diff --git a/src/System.Diagnostics.PerformanceCounter/src/Configurations.props b/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
index 2cd87e6d85aa..2803d07fd750 100644
--- a/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0-Windows_NT;
diff --git a/src/System.Diagnostics.PerformanceCounter/src/Resources/Strings.resx b/src/System.Diagnostics.PerformanceCounter/src/Resources/Strings.resx
index aa7e4cf7116a..4aa541371623 100644
--- a/src/System.Diagnostics.PerformanceCounter/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.PerformanceCounter/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props b/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
index 3846dcdc8277..258f866af54d 100644
--- a/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
+++ b/src/System.Diagnostics.PerformanceCounter/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.Process/Directory.Build.props b/src/System.Diagnostics.Process/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Diagnostics.Process/Directory.Build.props
+++ b/src/System.Diagnostics.Process/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Process/ref/Configurations.props b/src/System.Diagnostics.Process/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.Process/ref/Configurations.props
+++ b/src/System.Diagnostics.Process/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Process/src/Configurations.props b/src/System.Diagnostics.Process/src/Configurations.props
index 26edecb79eac..114d148a04de 100644
--- a/src/System.Diagnostics.Process/src/Configurations.props
+++ b/src/System.Diagnostics.Process/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Diagnostics.Process/src/Resources/Strings.resx b/src/System.Diagnostics.Process/src/Resources/Strings.resx
index c923d7a3c465..744a1e05f7d9 100644
--- a/src/System.Diagnostics.Process/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.Process/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Diagnostics.Process/tests/Configurations.props b/src/System.Diagnostics.Process/tests/Configurations.props
index a16e3384363a..72b33f4b9404 100644
--- a/src/System.Diagnostics.Process/tests/Configurations.props
+++ b/src/System.Diagnostics.Process/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Diagnostics.Process/tests/Performance/Configurations.props b/src/System.Diagnostics.Process/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Diagnostics.Process/tests/Performance/Configurations.props
+++ b/src/System.Diagnostics.Process/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.StackTrace/Directory.Build.props b/src/System.Diagnostics.StackTrace/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Diagnostics.StackTrace/Directory.Build.props
+++ b/src/System.Diagnostics.StackTrace/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.StackTrace/ref/Configurations.props b/src/System.Diagnostics.StackTrace/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.StackTrace/ref/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.StackTrace/src/Configurations.props b/src/System.Diagnostics.StackTrace/src/Configurations.props
index d836e2fccfe7..46a01fa07ee1 100644
--- a/src/System.Diagnostics.StackTrace/src/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Diagnostics.StackTrace/tests/Configurations.props b/src/System.Diagnostics.StackTrace/tests/Configurations.props
index 1cd8ced0f64f..2870dced4592 100644
--- a/src/System.Diagnostics.StackTrace/tests/Configurations.props
+++ b/src/System.Diagnostics.StackTrace/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props b/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
index 201076ca67cd..095c4309fecc 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.TextWriterTraceListener/src/Resources/Strings.resx b/src/System.Diagnostics.TextWriterTraceListener/src/Resources/Strings.resx
index 235c27370f46..12b248f4ddec 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.TextWriterTraceListener/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props b/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
index bc04a198c0c8..caa171561192 100644
--- a/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
+++ b/src/System.Diagnostics.TextWriterTraceListener/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.Tools/Directory.Build.props b/src/System.Diagnostics.Tools/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Diagnostics.Tools/Directory.Build.props
+++ b/src/System.Diagnostics.Tools/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Tools/ref/Configurations.props b/src/System.Diagnostics.Tools/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.Tools/ref/Configurations.props
+++ b/src/System.Diagnostics.Tools/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Tools/src/Configurations.props b/src/System.Diagnostics.Tools/src/Configurations.props
index 5015085ba53a..7be6fd9cfa54 100644
--- a/src/System.Diagnostics.Tools/src/Configurations.props
+++ b/src/System.Diagnostics.Tools/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.Tools/tests/Configurations.props b/src/System.Diagnostics.Tools/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Diagnostics.Tools/tests/Configurations.props
+++ b/src/System.Diagnostics.Tools/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Diagnostics.TraceSource/Directory.Build.props b/src/System.Diagnostics.TraceSource/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Diagnostics.TraceSource/Directory.Build.props
+++ b/src/System.Diagnostics.TraceSource/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.TraceSource/ref/Configurations.props b/src/System.Diagnostics.TraceSource/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.TraceSource/ref/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.TraceSource/src/Configurations.props b/src/System.Diagnostics.TraceSource/src/Configurations.props
index 26edecb79eac..114d148a04de 100644
--- a/src/System.Diagnostics.TraceSource/src/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-FreeBSD;
diff --git a/src/System.Diagnostics.TraceSource/src/Resources/Strings.resx b/src/System.Diagnostics.TraceSource/src/Resources/Strings.resx
index d726fb97c605..8b4f1d873141 100644
--- a/src/System.Diagnostics.TraceSource/src/Resources/Strings.resx
+++ b/src/System.Diagnostics.TraceSource/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Diagnostics.TraceSource/tests/Configurations.props b/src/System.Diagnostics.TraceSource/tests/Configurations.props
index 70c86ae5ae1b..9665ecd73ad1 100644
--- a/src/System.Diagnostics.TraceSource/tests/Configurations.props
+++ b/src/System.Diagnostics.TraceSource/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.Tracing/Directory.Build.props b/src/System.Diagnostics.Tracing/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Diagnostics.Tracing/Directory.Build.props
+++ b/src/System.Diagnostics.Tracing/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Diagnostics.Tracing/ref/Configurations.props b/src/System.Diagnostics.Tracing/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Diagnostics.Tracing/ref/Configurations.props
+++ b/src/System.Diagnostics.Tracing/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Diagnostics.Tracing/src/Configurations.props b/src/System.Diagnostics.Tracing/src/Configurations.props
index 5015085ba53a..7be6fd9cfa54 100644
--- a/src/System.Diagnostics.Tracing/src/Configurations.props
+++ b/src/System.Diagnostics.Tracing/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Diagnostics.Tracing/tests/Configurations.props b/src/System.Diagnostics.Tracing/tests/Configurations.props
index e9f658c09911..dd006cdc1e7d 100644
--- a/src/System.Diagnostics.Tracing/tests/Configurations.props
+++ b/src/System.Diagnostics.Tracing/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.fr-FR.resx b/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.fr-FR.resx
index 28e8346deaec..c14f83042ecb 100644
--- a/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.fr-FR.resx
+++ b/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.fr-FR.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.resx b/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.resx
index 969621a1f801..28da6efdf88e 100644
--- a/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.resx
+++ b/src/System.Diagnostics.Tracing/tests/EvtSrcForReflection/EsrResources.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.DirectoryServices.AccountManagement/Directory.Build.props b/src/System.DirectoryServices.AccountManagement/Directory.Build.props
index 8dc274fa4c6d..2a7de3529ba7 100644
--- a/src/System.DirectoryServices.AccountManagement/Directory.Build.props
+++ b/src/System.DirectoryServices.AccountManagement/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj b/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
index 3d0905afc29a..b56c21771220 100644
--- a/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
+++ b/src/System.DirectoryServices.AccountManagement/pkg/System.DirectoryServices.AccountManagement.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.AccountManagement.csproj">
diff --git a/src/System.DirectoryServices.AccountManagement/ref/Configurations.props b/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.AccountManagement/src/Configurations.props b/src/System.DirectoryServices.AccountManagement/src/Configurations.props
index 5e32c7ace234..a04b3b7975b6 100644
--- a/src/System.DirectoryServices.AccountManagement/src/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.AccountManagement/src/Resources/Strings.resx b/src/System.DirectoryServices.AccountManagement/src/Resources/Strings.resx
index d45f4c3a742e..2bde87905023 100644
--- a/src/System.DirectoryServices.AccountManagement/src/Resources/Strings.resx
+++ b/src/System.DirectoryServices.AccountManagement/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.DirectoryServices.AccountManagement/tests/Configurations.props b/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
index 3846dcdc8277..258f866af54d 100644
--- a/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
+++ b/src/System.DirectoryServices.AccountManagement/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices.AccountManagement/tests/LDAP.Configuration.xml b/src/System.DirectoryServices.AccountManagement/tests/LDAP.Configuration.xml
index 16d7b6c5c2cb..01ba50235f89 100644
--- a/src/System.DirectoryServices.AccountManagement/tests/LDAP.Configuration.xml
+++ b/src/System.DirectoryServices.AccountManagement/tests/LDAP.Configuration.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <Configuration>
 <!--
     To enable the tests marked with [ConditionalFact(nameof(IsActiveDirectoryServer))], need to setup a Windows Active Directory server and provide the needed server info here.
diff --git a/src/System.DirectoryServices.Protocols/Directory.Build.props b/src/System.DirectoryServices.Protocols/Directory.Build.props
index 7b2836163cb7..131fb6770cd1 100644
--- a/src/System.DirectoryServices.Protocols/Directory.Build.props
+++ b/src/System.DirectoryServices.Protocols/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj b/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
index 4e42969db03f..61bb1491ad90 100644
--- a/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
+++ b/src/System.DirectoryServices.Protocols/pkg/System.DirectoryServices.Protocols.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.Protocols.csproj">
diff --git a/src/System.DirectoryServices.Protocols/ref/Configurations.props b/src/System.DirectoryServices.Protocols/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.DirectoryServices.Protocols/ref/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.Protocols/src/Configurations.props b/src/System.DirectoryServices.Protocols/src/Configurations.props
index 5e32c7ace234..a04b3b7975b6 100644
--- a/src/System.DirectoryServices.Protocols/src/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices.Protocols/src/Resources/Strings.resx b/src/System.DirectoryServices.Protocols/src/Resources/Strings.resx
index a168f202359d..d454ecca2186 100644
--- a/src/System.DirectoryServices.Protocols/src/Resources/Strings.resx
+++ b/src/System.DirectoryServices.Protocols/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.DirectoryServices.Protocols/tests/Configurations.props b/src/System.DirectoryServices.Protocols/tests/Configurations.props
index 76cbebba2ba4..9b3928d692a3 100644
--- a/src/System.DirectoryServices.Protocols/tests/Configurations.props
+++ b/src/System.DirectoryServices.Protocols/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
         netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices.Protocols/tests/LDAP.Configuration.xml b/src/System.DirectoryServices.Protocols/tests/LDAP.Configuration.xml
index 2772695598f9..868744b4475c 100644
--- a/src/System.DirectoryServices.Protocols/tests/LDAP.Configuration.xml
+++ b/src/System.DirectoryServices.Protocols/tests/LDAP.Configuration.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <!--
     To enable the tests marked with [ConditionalFact(nameof(IsLdapConfigurationExist))], need to setup LDAP server and provide the needed server info here.
     The easiest way to get LDAP server is to download and install OpenDJ https://backstage.forgerock.com/downloads/OpenDJ/Directory%20Services/5.0.0#browse.
diff --git a/src/System.DirectoryServices/Directory.Build.props b/src/System.DirectoryServices/Directory.Build.props
index 7b2836163cb7..131fb6770cd1 100644
--- a/src/System.DirectoryServices/Directory.Build.props
+++ b/src/System.DirectoryServices/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj b/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
index e01f114c0168..a94caab42085 100644
--- a/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
+++ b/src/System.DirectoryServices/pkg/System.DirectoryServices.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.DirectoryServices.csproj">
diff --git a/src/System.DirectoryServices/ref/Configurations.props b/src/System.DirectoryServices/ref/Configurations.props
index 1bfc3dbdee70..aee5c900a4d1 100644
--- a/src/System.DirectoryServices/ref/Configurations.props
+++ b/src/System.DirectoryServices/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices/src/Configurations.props b/src/System.DirectoryServices/src/Configurations.props
index 5e32c7ace234..a04b3b7975b6 100644
--- a/src/System.DirectoryServices/src/Configurations.props
+++ b/src/System.DirectoryServices/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.DirectoryServices/src/Resources/Strings.resx b/src/System.DirectoryServices/src/Resources/Strings.resx
index aef69894ff36..64f8ba2d1f04 100644
--- a/src/System.DirectoryServices/src/Resources/Strings.resx
+++ b/src/System.DirectoryServices/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!--
     Microsoft ResX Schema
 
diff --git a/src/System.DirectoryServices/tests/Configurations.props b/src/System.DirectoryServices/tests/Configurations.props
index 76cbebba2ba4..9b3928d692a3 100644
--- a/src/System.DirectoryServices/tests/Configurations.props
+++ b/src/System.DirectoryServices/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
         netcoreapp-Windows_NT;
diff --git a/src/System.DirectoryServices/tests/LDAP.Configuration.xml b/src/System.DirectoryServices/tests/LDAP.Configuration.xml
index 87a4f76c6bc7..3fd854f507e9 100644
--- a/src/System.DirectoryServices/tests/LDAP.Configuration.xml
+++ b/src/System.DirectoryServices/tests/LDAP.Configuration.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <!--
     To enable the tests marked with [ConditionalFact(nameof(IsLdapConfigurationExist))], need to setup LDAP server and provide the needed server info here.
     The easiest way to get LDAP server is to download and install OpenDJ https://backstage.forgerock.com/downloads/OpenDJ/Directory%20Services/5.0.0#browse. 
diff --git a/src/System.Drawing.Common/Directory.Build.props b/src/System.Drawing.Common/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Drawing.Common/Directory.Build.props
+++ b/src/System.Drawing.Common/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj b/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
index 6f66d6a23fcf..d240caf2263c 100644
--- a/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
+++ b/src/System.Drawing.Common/pkg/System.Drawing.Common.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Drawing.Common.csproj">
diff --git a/src/System.Drawing.Common/ref/Configurations.props b/src/System.Drawing.Common/ref/Configurations.props
index 502b0dc020f5..f40303ed6743 100644
--- a/src/System.Drawing.Common/ref/Configurations.props
+++ b/src/System.Drawing.Common/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Drawing.Common/src/Configurations.props b/src/System.Drawing.Common/src/Configurations.props
index 0ba881f17a38..df0019d36e70 100644
--- a/src/System.Drawing.Common/src/Configurations.props
+++ b/src/System.Drawing.Common/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0-Windows_NT;
diff --git a/src/System.Drawing.Common/src/Resources/Strings.resx b/src/System.Drawing.Common/src/Resources/Strings.resx
index 176347bf76f1..a8db37b9924b 100644
--- a/src/System.Drawing.Common/src/Resources/Strings.resx
+++ b/src/System.Drawing.Common/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.Drawing.Common/tests/Configurations.props b/src/System.Drawing.Common/tests/Configurations.props
index 461b7a8ee559..7538cfb5a868 100644
--- a/src/System.Drawing.Common/tests/Configurations.props
+++ b/src/System.Drawing.Common/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Drawing.Common/tests/Performance/Configurations.props b/src/System.Drawing.Common/tests/Performance/Configurations.props
index 1cd8ced0f64f..d6385a202011 100644
--- a/src/System.Drawing.Common/tests/Performance/Configurations.props
+++ b/src/System.Drawing.Common/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Drawing.Primitives/Directory.Build.props b/src/System.Drawing.Primitives/Directory.Build.props
index 2b898e184148..19239baac090 100644
--- a/src/System.Drawing.Primitives/Directory.Build.props
+++ b/src/System.Drawing.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.0.0</AssemblyVersion>
diff --git a/src/System.Drawing.Primitives/ref/Configurations.props b/src/System.Drawing.Primitives/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Drawing.Primitives/ref/Configurations.props
+++ b/src/System.Drawing.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Drawing.Primitives/src/Configurations.props b/src/System.Drawing.Primitives/src/Configurations.props
index 201076ca67cd..095c4309fecc 100644
--- a/src/System.Drawing.Primitives/src/Configurations.props
+++ b/src/System.Drawing.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Drawing.Primitives/src/Resources/Strings.resx b/src/System.Drawing.Primitives/src/Resources/Strings.resx
index 23500f1f69ce..a931c14fa429 100644
--- a/src/System.Drawing.Primitives/src/Resources/Strings.resx
+++ b/src/System.Drawing.Primitives/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Drawing.Primitives/tests/Configurations.props b/src/System.Drawing.Primitives/tests/Configurations.props
index b3419e3ba75b..e03f69fa7b7f 100644
--- a/src/System.Drawing.Primitives/tests/Configurations.props
+++ b/src/System.Drawing.Primitives/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Drawing.Primitives/tests/Performance/Configurations.props b/src/System.Drawing.Primitives/tests/Performance/Configurations.props
index 6644453ed1d6..a1eadd7648d8 100644
--- a/src/System.Drawing.Primitives/tests/Performance/Configurations.props
+++ b/src/System.Drawing.Primitives/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Drawing.Primitives/tests/Performance/System.Drawing.Primitives.PerformanceTests.csproj b/src/System.Drawing.Primitives/tests/Performance/System.Drawing.Primitives.PerformanceTests.csproj
index 321f9debe1ac..2170057cb002 100644
--- a/src/System.Drawing.Primitives/tests/Performance/System.Drawing.Primitives.PerformanceTests.csproj
+++ b/src/System.Drawing.Primitives/tests/Performance/System.Drawing.Primitives.PerformanceTests.csproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <ProjectGuid>{1BD5C9BF-D7F2-4249-AA31-43B1850A5DB3}</ProjectGuid>
     <Configurations>netcoreapp-Debug;netcoreapp-Release</Configurations>
diff --git a/src/System.Dynamic.Runtime/Directory.Build.props b/src/System.Dynamic.Runtime/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Dynamic.Runtime/Directory.Build.props
+++ b/src/System.Dynamic.Runtime/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Dynamic.Runtime/ref/Configurations.props b/src/System.Dynamic.Runtime/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Dynamic.Runtime/ref/Configurations.props
+++ b/src/System.Dynamic.Runtime/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Dynamic.Runtime/src/Configurations.props b/src/System.Dynamic.Runtime/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.Dynamic.Runtime/src/Configurations.props
+++ b/src/System.Dynamic.Runtime/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Dynamic.Runtime/tests/Configurations.props b/src/System.Dynamic.Runtime/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Dynamic.Runtime/tests/Configurations.props
+++ b/src/System.Dynamic.Runtime/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Globalization.Calendars/Directory.Build.props b/src/System.Globalization.Calendars/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Globalization.Calendars/Directory.Build.props
+++ b/src/System.Globalization.Calendars/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Globalization.Calendars/ref/Configurations.props b/src/System.Globalization.Calendars/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Globalization.Calendars/ref/Configurations.props
+++ b/src/System.Globalization.Calendars/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Globalization.Calendars/src/Configurations.props b/src/System.Globalization.Calendars/src/Configurations.props
index eff5e83b15ea..24f90bfd1544 100644
--- a/src/System.Globalization.Calendars/src/Configurations.props
+++ b/src/System.Globalization.Calendars/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
+++ b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/System.Globalization.CalendarsWithConfigSwitch.Tests.csproj b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/System.Globalization.CalendarsWithConfigSwitch.Tests.csproj
index 7220da2212bf..b6ba861c57e0 100644
--- a/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/System.Globalization.CalendarsWithConfigSwitch.Tests.csproj
+++ b/src/System.Globalization.Calendars/tests/CalendarTestWithConfigSwitch/System.Globalization.CalendarsWithConfigSwitch.Tests.csproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <ProjectGuid>{77BE33BB-790D-4D0C-9336-E073001CBD15}</ProjectGuid>
     <Configurations>netcoreapp-Debug;netcoreapp-Release</Configurations>
diff --git a/src/System.Globalization.Calendars/tests/Configurations.props b/src/System.Globalization.Calendars/tests/Configurations.props
index 57b5cf7f917d..8c1230328e1b 100644
--- a/src/System.Globalization.Calendars/tests/Configurations.props
+++ b/src/System.Globalization.Calendars/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Globalization.Extensions/Directory.Build.props b/src/System.Globalization.Extensions/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Globalization.Extensions/Directory.Build.props
+++ b/src/System.Globalization.Extensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Globalization.Extensions/ref/Configurations.props b/src/System.Globalization.Extensions/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Globalization.Extensions/ref/Configurations.props
+++ b/src/System.Globalization.Extensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Globalization.Extensions/src/Configurations.props b/src/System.Globalization.Extensions/src/Configurations.props
index f612570ae28e..421f137c2465 100644
--- a/src/System.Globalization.Extensions/src/Configurations.props
+++ b/src/System.Globalization.Extensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Globalization.Extensions/tests/Configurations.props b/src/System.Globalization.Extensions/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Globalization.Extensions/tests/Configurations.props
+++ b/src/System.Globalization.Extensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Globalization/Directory.Build.props b/src/System.Globalization/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Globalization/Directory.Build.props
+++ b/src/System.Globalization/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Globalization/ref/Configurations.props b/src/System.Globalization/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Globalization/ref/Configurations.props
+++ b/src/System.Globalization/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Globalization/src/Configurations.props b/src/System.Globalization/src/Configurations.props
index c4b354d18fcd..8e16bc6010c4 100644
--- a/src/System.Globalization/src/Configurations.props
+++ b/src/System.Globalization/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Globalization/tests/Configurations.props b/src/System.Globalization/tests/Configurations.props
index 2c7e98fabbc8..b8c4e127e896 100644
--- a/src/System.Globalization/tests/Configurations.props
+++ b/src/System.Globalization/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Globalization/tests/Invariant/Configurations.props b/src/System.Globalization/tests/Invariant/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Globalization/tests/Invariant/Configurations.props
+++ b/src/System.Globalization/tests/Invariant/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Globalization/tests/Performance/Configurations.props b/src/System.Globalization/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Globalization/tests/Performance/Configurations.props
+++ b/src/System.Globalization/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.IO.Compression.Brotli/Directory.Build.props b/src/System.IO.Compression.Brotli/Directory.Build.props
index 525af20f9ebd..f012061528d4 100644
--- a/src/System.IO.Compression.Brotli/Directory.Build.props
+++ b/src/System.IO.Compression.Brotli/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.IO.Compression.Brotli/ref/Configurations.props b/src/System.IO.Compression.Brotli/ref/Configurations.props
index 323c11cf6937..55d2de1d23f8 100644
--- a/src/System.IO.Compression.Brotli/ref/Configurations.props
+++ b/src/System.IO.Compression.Brotli/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.IO.Compression.Brotli/src/Configurations.props b/src/System.IO.Compression.Brotli/src/Configurations.props
index 20e7ab532f10..1c0ceb0002ac 100644
--- a/src/System.IO.Compression.Brotli/src/Configurations.props
+++ b/src/System.IO.Compression.Brotli/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.IO.Compression.Brotli/src/Resources/Strings.resx b/src/System.IO.Compression.Brotli/src/Resources/Strings.resx
index e8bd6e4363e2..943c3db27fb6 100644
--- a/src/System.IO.Compression.Brotli/src/Resources/Strings.resx
+++ b/src/System.IO.Compression.Brotli/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.IO.Compression.Brotli/tests/Configurations.props b/src/System.IO.Compression.Brotli/tests/Configurations.props
index 20e7ab532f10..1c0ceb0002ac 100644
--- a/src/System.IO.Compression.Brotli/tests/Configurations.props
+++ b/src/System.IO.Compression.Brotli/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.IO.Compression.Brotli/tests/Performance/Configurations.props b/src/System.IO.Compression.Brotli/tests/Performance/Configurations.props
index d6283543de1d..ee16a95ad965 100644
--- a/src/System.IO.Compression.Brotli/tests/Performance/Configurations.props
+++ b/src/System.IO.Compression.Brotli/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.IO.Compression.ZipFile/Directory.Build.props b/src/System.IO.Compression.ZipFile/Directory.Build.props
index 26490d70675e..bca14bdec9ce 100644
--- a/src/System.IO.Compression.ZipFile/Directory.Build.props
+++ b/src/System.IO.Compression.ZipFile/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.IO.Compression.ZipFile/ref/Configurations.props b/src/System.IO.Compression.ZipFile/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.IO.Compression.ZipFile/ref/Configurations.props
+++ b/src/System.IO.Compression.ZipFile/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.IO.Compression.ZipFile/src/Configurations.props b/src/System.IO.Compression.ZipFile/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.IO.Compression.ZipFile/src/Configurations.props
+++ b/src/System.IO.Compression.ZipFile/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
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index 4988fc07e1bc..0025ce6cf713 100644
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index 4988fc07e1bc..0025ce6cf713 100644
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diff --git a/src/System.Json/tests/Configurations.props b/src/System.Json/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Json/tests/Configurations.props
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diff --git a/src/System.Linq.Expressions/Directory.Build.props b/src/System.Linq.Expressions/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Linq.Expressions/Directory.Build.props
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diff --git a/src/System.Linq.Expressions/ref/Configurations.props b/src/System.Linq.Expressions/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Linq.Expressions/ref/Configurations.props
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diff --git a/src/System.Linq.Expressions/src/Configurations.props b/src/System.Linq.Expressions/src/Configurations.props
index a2b28a2d7864..c7698697cf40 100644
--- a/src/System.Linq.Expressions/src/Configurations.props
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index c850bfa296bc..4386b7c2fcd8 100644
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diff --git a/src/System.Linq.Expressions/tests/Configurations.props b/src/System.Linq.Expressions/tests/Configurations.props
index 05acab2cb530..15db1c4872ce 100644
--- a/src/System.Linq.Expressions/tests/Configurations.props
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diff --git a/src/System.Linq.Parallel/Directory.Build.props b/src/System.Linq.Parallel/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
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diff --git a/src/System.Linq.Parallel/ref/Configurations.props b/src/System.Linq.Parallel/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
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index 296b296ee218..aa1d34875976 100644
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diff --git a/src/System.Linq.Parallel/src/Resources/Strings.resx b/src/System.Linq.Parallel/src/Resources/Strings.resx
index c82af19949df..0085a822db4b 100644
--- a/src/System.Linq.Parallel/src/Resources/Strings.resx
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diff --git a/src/System.Linq.Parallel/tests/Configurations.props b/src/System.Linq.Parallel/tests/Configurations.props
index 95f2aee4ed8c..a83bb569e75c 100644
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index df9b80b230a8..581054d46db4 100644
--- a/src/System.Linq.Parallel/tests/Performance/Configurations.props
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diff --git a/src/System.Linq.Queryable/Directory.Build.props b/src/System.Linq.Queryable/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
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diff --git a/src/System.Linq.Queryable/ref/Configurations.props b/src/System.Linq.Queryable/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Linq.Queryable/ref/Configurations.props
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diff --git a/src/System.Linq.Queryable/src/Configurations.props b/src/System.Linq.Queryable/src/Configurations.props
index 296b296ee218..aa1d34875976 100644
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index 02d099823e43..334423dc25eb 100644
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index 4c35b6322355..2bc19ff4170e 100644
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index b90a424e652c..988124d2d8e2 100644
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index 5e830ff8b39b..acf56fa2750e 100644
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index 4c5bf3b44410..86aa0bae312c 100644
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index ceea350bd5dd..5ef94261c515 100644
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index df9b80b230a8..581054d46db4 100644
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index 7b2836163cb7..131fb6770cd1 100644
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diff --git a/src/System.Management/pkg/System.Management.pkgproj b/src/System.Management/pkg/System.Management.pkgproj
index 4695e02fd9cb..01989533008b 100644
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diff --git a/src/System.Management/tests/Configurations.props b/src/System.Management/tests/Configurations.props
index 76cbebba2ba4..9b3928d692a3 100644
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index ad6ff0fc2479..97cc91e8ef89 100644
--- a/src/System.Memory/Directory.Build.props
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diff --git a/src/System.Memory/ref/Configurations.props b/src/System.Memory/ref/Configurations.props
index 68b5b2fac5f4..c3ba6fd6615b 100644
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diff --git a/src/System.Memory/src/Configurations.props b/src/System.Memory/src/Configurations.props
index eff5e83b15ea..24f90bfd1544 100644
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diff --git a/src/System.Memory/src/Resources/Strings.resx b/src/System.Memory/src/Resources/Strings.resx
index b066ed86b332..31ac00d9312b 100644
--- a/src/System.Memory/src/Resources/Strings.resx
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-<root>
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diff --git a/src/System.Memory/tests/Configurations.props b/src/System.Memory/tests/Configurations.props
index 8fbfed8adee6..2b2323d47917 100644
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diff --git a/src/System.Memory/tests/Performance/Configurations.props b/src/System.Memory/tests/Performance/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
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diff --git a/src/System.Net.Http.Rtc/Directory.Build.props b/src/System.Net.Http.Rtc/Directory.Build.props
index 410d5b1a0641..1a953479460c 100644
--- a/src/System.Net.Http.Rtc/Directory.Build.props
+++ b/src/System.Net.Http.Rtc/Directory.Build.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http.Rtc/ref/Configurations.props b/src/System.Net.Http.Rtc/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
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diff --git a/src/System.Net.Http.Rtc/src/Configurations.props b/src/System.Net.Http.Rtc/src/Configurations.props
index 9d59a0f8184a..faf83316793d 100644
--- a/src/System.Net.Http.Rtc/src/Configurations.props
+++ b/src/System.Net.Http.Rtc/src/Configurations.props
@@ -1,5 +1,4 @@
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diff --git a/src/System.Net.Http.WinHttpHandler/Directory.Build.props b/src/System.Net.Http.WinHttpHandler/Directory.Build.props
index 38448e58868c..98004a4badf7 100644
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diff --git a/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj b/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj
index 64c64c13a280..3c96d30c14a1 100644
--- a/src/System.Net.Http.WinHttpHandler/pkg/System.Net.Http.WinHttpHandler.pkgproj
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http.WinHttpHandler/ref/Configurations.props b/src/System.Net.Http.WinHttpHandler/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
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diff --git a/src/System.Net.Http.WinHttpHandler/src/Configurations.props b/src/System.Net.Http.WinHttpHandler/src/Configurations.props
index 7147eef7a3f6..07902e9a0855 100644
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diff --git a/src/System.Net.Http.WinHttpHandler/src/Resources/Strings.resx b/src/System.Net.Http.WinHttpHandler/src/Resources/Strings.resx
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diff --git a/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild b/src/System.Net.Http.WinHttpHandler/src/System.Net.Http.WinHttpHandler.msbuild
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diff --git a/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props b/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
index b6f983f5d9de..611acec17f5f 100644
--- a/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props b/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
index b6f983f5d9de..611acec17f5f 100644
--- a/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
+++ b/src/System.Net.Http.WinHttpHandler/tests/UnitTests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/Directory.Build.props b/src/System.Net.Http/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Net.Http/Directory.Build.props
+++ b/src/System.Net.Http/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Http/ref/Configurations.props b/src/System.Net.Http/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.Http/ref/Configurations.props
+++ b/src/System.Net.Http/ref/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/src/Configurations.props b/src/System.Net.Http/src/Configurations.props
index 97c359ead69f..69ca121c25f8 100644
--- a/src/System.Net.Http/src/Configurations.props
+++ b/src/System.Net.Http/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Http/src/Resources/Strings.resx b/src/System.Net.Http/src/Resources/Strings.resx
index 090b35f5c023..f7cc449b1622 100644
--- a/src/System.Net.Http/src/Resources/Strings.resx
+++ b/src/System.Net.Http/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Net.Http/tests/FunctionalTests/Configurations.props b/src/System.Net.Http/tests/FunctionalTests/Configurations.props
index 4aff6eb75715..0743953b2ee3 100644
--- a/src/System.Net.Http/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Http/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/tests/FunctionalTests/prerequisites/Web.config b/src/System.Net.Http/tests/FunctionalTests/prerequisites/Web.config
index 6eaf22d986a6..93921c70d3b8 100644
--- a/src/System.Net.Http/tests/FunctionalTests/prerequisites/Web.config
+++ b/src/System.Net.Http/tests/FunctionalTests/prerequisites/Web.config
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<!--
   For more information on how to configure your ASP.NET application, please visit
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diff --git a/src/System.Net.Http/tests/Performance/Configurations.props b/src/System.Net.Http/tests/Performance/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Net.Http/tests/Performance/Configurations.props
+++ b/src/System.Net.Http/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Http/tests/UnitTests/Configurations.props b/src/System.Net.Http/tests/UnitTests/Configurations.props
index 6644453ed1d6..a1eadd7648d8 100644
--- a/src/System.Net.Http/tests/UnitTests/Configurations.props
+++ b/src/System.Net.Http/tests/UnitTests/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.HttpListener/Directory.Build.props b/src/System.Net.HttpListener/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
--- a/src/System.Net.HttpListener/Directory.Build.props
+++ b/src/System.Net.HttpListener/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.HttpListener/ref/Configurations.props b/src/System.Net.HttpListener/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.HttpListener/ref/Configurations.props
+++ b/src/System.Net.HttpListener/ref/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.HttpListener/src/Configurations.props b/src/System.Net.HttpListener/src/Configurations.props
index 201076ca67cd..095c4309fecc 100644
--- a/src/System.Net.HttpListener/src/Configurations.props
+++ b/src/System.Net.HttpListener/src/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.HttpListener/src/Resources/Strings.resx b/src/System.Net.HttpListener/src/Resources/Strings.resx
index 182660572e7f..f9747a646f6a 100644
--- a/src/System.Net.HttpListener/src/Resources/Strings.resx
+++ b/src/System.Net.HttpListener/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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-<root>
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diff --git a/src/System.Net.HttpListener/tests/Configurations.props b/src/System.Net.HttpListener/tests/Configurations.props
index 184d842e9b16..5f1c80530c6e 100644
--- a/src/System.Net.HttpListener/tests/Configurations.props
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diff --git a/src/System.Net.Mail/Directory.Build.props b/src/System.Net.Mail/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
--- a/src/System.Net.Mail/Directory.Build.props
+++ b/src/System.Net.Mail/Directory.Build.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Mail/ref/Configurations.props b/src/System.Net.Mail/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.Mail/ref/Configurations.props
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diff --git a/src/System.Net.Mail/src/Configurations.props b/src/System.Net.Mail/src/Configurations.props
index f612570ae28e..421f137c2465 100644
--- a/src/System.Net.Mail/src/Configurations.props
+++ b/src/System.Net.Mail/src/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Mail/src/Resources/Strings.resx b/src/System.Net.Mail/src/Resources/Strings.resx
index 2a6b4dc23688..a72e327927cc 100644
--- a/src/System.Net.Mail/src/Resources/Strings.resx
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diff --git a/src/System.Net.Mail/tests/Functional/Configurations.props b/src/System.Net.Mail/tests/Functional/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Net.Mail/tests/Functional/Configurations.props
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diff --git a/src/System.Net.Mail/tests/Unit/Configurations.props b/src/System.Net.Mail/tests/Unit/Configurations.props
index 296b296ee218..591dde55dde6 100644
--- a/src/System.Net.Mail/tests/Unit/Configurations.props
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diff --git a/src/System.Net.NameResolution/Directory.Build.props b/src/System.Net.NameResolution/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Net.NameResolution/Directory.Build.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NameResolution/ref/Configurations.props b/src/System.Net.NameResolution/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.NameResolution/ref/Configurations.props
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diff --git a/src/System.Net.NameResolution/src/Configurations.props b/src/System.Net.NameResolution/src/Configurations.props
index 201076ca67cd..095c4309fecc 100644
--- a/src/System.Net.NameResolution/src/Configurations.props
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NameResolution/src/Resources/Strings.resx b/src/System.Net.NameResolution/src/Resources/Strings.resx
index 4fbff57cd6fd..2bd0e6280182 100644
--- a/src/System.Net.NameResolution/src/Resources/Strings.resx
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diff --git a/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props b/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props
index ccb76c51f42b..1b6509ccdf10 100644
--- a/src/System.Net.NameResolution/tests/FunctionalTests/Configurations.props
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diff --git a/src/System.Net.NameResolution/tests/PalTests/Configurations.props b/src/System.Net.NameResolution/tests/PalTests/Configurations.props
index e9f658c09911..ad8296d246d1 100644
--- a/src/System.Net.NameResolution/tests/PalTests/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NameResolution/tests/UnitTests/Configurations.props b/src/System.Net.NameResolution/tests/UnitTests/Configurations.props
index e9f658c09911..ad8296d246d1 100644
--- a/src/System.Net.NameResolution/tests/UnitTests/Configurations.props
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NetworkInformation/Directory.Build.props b/src/System.Net.NetworkInformation/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Net.NetworkInformation/Directory.Build.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.NetworkInformation/ref/Configurations.props b/src/System.Net.NetworkInformation/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.NetworkInformation/ref/Configurations.props
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.NetworkInformation/src/Configurations.props b/src/System.Net.NetworkInformation/src/Configurations.props
index 38ef8a4972d9..e30f21960f55 100644
--- a/src/System.Net.NetworkInformation/src/Configurations.props
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.NetworkInformation/src/Resources/Strings.resx b/src/System.Net.NetworkInformation/src/Resources/Strings.resx
index d6ec2226edea..4c8454671318 100644
--- a/src/System.Net.NetworkInformation/src/Resources/Strings.resx
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diff --git a/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props b/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.NetworkInformation/tests/FunctionalTests/Configurations.props
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Ping/Directory.Build.props b/src/System.Net.Ping/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Net.Ping/Directory.Build.props
+++ b/src/System.Net.Ping/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Ping/ref/Configurations.props b/src/System.Net.Ping/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.Ping/ref/Configurations.props
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Ping/src/Configurations.props b/src/System.Net.Ping/src/Configurations.props
index f612570ae28e..421f137c2465 100644
--- a/src/System.Net.Ping/src/Configurations.props
+++ b/src/System.Net.Ping/src/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Ping/src/Resources/Strings.resx b/src/System.Net.Ping/src/Resources/Strings.resx
index 6928bdc8b7e1..74b274496a4d 100644
--- a/src/System.Net.Ping/src/Resources/Strings.resx
+++ b/src/System.Net.Ping/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Net.Ping/tests/FunctionalTests/Configurations.props b/src/System.Net.Ping/tests/FunctionalTests/Configurations.props
index fc09ee113b7f..2b7db4cef13b 100644
--- a/src/System.Net.Ping/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Ping/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Primitives/Directory.Build.props b/src/System.Net.Primitives/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Net.Primitives/Directory.Build.props
+++ b/src/System.Net.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Primitives/ref/Configurations.props b/src/System.Net.Primitives/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.Primitives/ref/Configurations.props
+++ b/src/System.Net.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Primitives/src/Configurations.props b/src/System.Net.Primitives/src/Configurations.props
index 969a8d8272d0..1ad17d8810ab 100644
--- a/src/System.Net.Primitives/src/Configurations.props
+++ b/src/System.Net.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Net.Primitives/src/Resources/Strings.resx b/src/System.Net.Primitives/src/Resources/Strings.resx
index e151873dbaf0..d95ea7484aac 100644
--- a/src/System.Net.Primitives/src/Resources/Strings.resx
+++ b/src/System.Net.Primitives/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props b/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
index 2f8b980c686e..dc4208c4b81b 100644
--- a/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
+++ b/src/System.Net.Primitives/tests/FunctionalTests/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Net.Primitives/tests/PalTests/Configurations.props b/src/System.Net.Primitives/tests/PalTests/Configurations.props
index 20e7ab532f10..1e8dd5d9394b 100644
--- a/src/System.Net.Primitives/tests/PalTests/Configurations.props
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index a5b0175f7d8d..b18c784fc409 100644
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index e9f658c09911..ad8296d246d1 100644
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index 4988fc07e1bc..0025ce6cf713 100644
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index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.Requests/ref/Configurations.props
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index f612570ae28e..421f137c2465 100644
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index 943fa8f94667..cb28aec1a43a 100644
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index df9b80b230a8..ff0d415e4593 100644
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index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Net.Security/Directory.Build.props
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index 5e830ff8b39b..acf56fa2750e 100644
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index 0afd1b0fe384..36c81459273c 100644
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index 4befab05d596..40c7686f2d92 100644
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--- a/src/System.Net.Security/tests/FunctionalTests/Configurations.props
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index fa19f81c7765..c747b327c487 100644
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index 7064b29a2c05..cabc694f5426 100644
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index bee8f6e6e1f0..d8cf6babb2ab 100644
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index 5e830ff8b39b..acf56fa2750e 100644
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index b90a424e652c..988124d2d8e2 100644
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index 5e830ff8b39b..acf56fa2750e 100644
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index 969a8d8272d0..1ad17d8810ab 100644
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index d86fa45f49d9..547bb2c70c3e 100644
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index 54d39c39e8c4..54fc664df86c 100644
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index ccb76c51f42b..1b6509ccdf10 100644
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diff --git a/src/System.Net.Sockets/tests/Performance/Configurations.props b/src/System.Net.Sockets/tests/Performance/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
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diff --git a/src/System.Net.WebClient/Directory.Build.props b/src/System.Net.WebClient/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
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diff --git a/src/System.Net.WebClient/ref/Configurations.props b/src/System.Net.WebClient/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
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diff --git a/src/System.Net.WebClient/src/Configurations.props b/src/System.Net.WebClient/src/Configurations.props
index aca7cfa92700..034ce4c0242e 100644
--- a/src/System.Net.WebClient/src/Configurations.props
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diff --git a/src/System.Net.WebClient/src/Resources/Strings.resx b/src/System.Net.WebClient/src/Resources/Strings.resx
index 3f1f54451306..c1ca641fd19a 100644
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diff --git a/src/System.Net.WebClient/tests/Configurations.props b/src/System.Net.WebClient/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
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diff --git a/src/System.Net.WebHeaderCollection/Directory.Build.props b/src/System.Net.WebHeaderCollection/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
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diff --git a/src/System.Net.WebHeaderCollection/ref/Configurations.props b/src/System.Net.WebHeaderCollection/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
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diff --git a/src/System.Net.WebHeaderCollection/src/Configurations.props b/src/System.Net.WebHeaderCollection/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
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diff --git a/src/System.Net.WebHeaderCollection/src/Resources/Strings.resx b/src/System.Net.WebHeaderCollection/src/Resources/Strings.resx
index 3010b5400fad..cab58a4e7876 100644
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diff --git a/src/System.Net.WebHeaderCollection/tests/Configurations.props b/src/System.Net.WebHeaderCollection/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
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diff --git a/src/System.Net.WebProxy/Directory.Build.props b/src/System.Net.WebProxy/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
--- a/src/System.Net.WebProxy/Directory.Build.props
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index 5e830ff8b39b..acf56fa2750e 100644
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index aca7cfa92700..034ce4c0242e 100644
--- a/src/System.Net.WebProxy/src/Configurations.props
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diff --git a/src/System.Net.WebProxy/tests/Configurations.props b/src/System.Net.WebProxy/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
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diff --git a/src/System.Net.WebSockets.Client/Directory.Build.props b/src/System.Net.WebSockets.Client/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
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diff --git a/src/System.Net.WebSockets.Client/ref/Configurations.props b/src/System.Net.WebSockets.Client/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
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diff --git a/src/System.Net.WebSockets.Client/src/Configurations.props b/src/System.Net.WebSockets.Client/src/Configurations.props
index 969a8d8272d0..1ad17d8810ab 100644
--- a/src/System.Net.WebSockets.Client/src/Configurations.props
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diff --git a/src/System.Net.WebSockets.Client/src/Resources/Strings.resx b/src/System.Net.WebSockets.Client/src/Resources/Strings.resx
index e3822e5d291f..3b7e1b596a84 100644
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+++ b/src/System.Net.WebSockets.Client/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Net.WebSockets.Client/tests/Configurations.props b/src/System.Net.WebSockets.Client/tests/Configurations.props
index 54d39c39e8c4..66667bf08c32 100644
--- a/src/System.Net.WebSockets.Client/tests/Configurations.props
+++ b/src/System.Net.WebSockets.Client/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props b/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props
+++ b/src/System.Net.WebSockets.WebSocketProtocol/Directory.Build.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj b/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
index ccfe78e6bbcb..b2eb6289f158 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
+++ b/src/System.Net.WebSockets.WebSocketProtocol/pkg/System.Net.WebSockets.WebSocketProtocol.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
+++ b/src/System.Net.WebSockets.WebSocketProtocol/ref/Configurations.props
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props
index f0ab430a4e86..df1d416fbbfd 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/src/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/src/Resources/Strings.resx b/src/System.Net.WebSockets.WebSocketProtocol/src/Resources/Strings.resx
index e9cc0e2ee72a..a67e9e09fd85 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/src/Resources/Strings.resx
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diff --git a/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props b/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Net.WebSockets.WebSocketProtocol/tests/Configurations.props
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diff --git a/src/System.Net.WebSockets/Directory.Build.props b/src/System.Net.WebSockets/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Net.WebSockets/Directory.Build.props
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Net.WebSockets/ref/Configurations.props b/src/System.Net.WebSockets/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Net.WebSockets/ref/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Net.WebSockets/src/Configurations.props b/src/System.Net.WebSockets/src/Configurations.props
index 4c5bf3b44410..86aa0bae312c 100644
--- a/src/System.Net.WebSockets/src/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Net.WebSockets/src/Resources/Strings.resx b/src/System.Net.WebSockets/src/Resources/Strings.resx
index 641c90a7390b..ce25b82f57a2 100644
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diff --git a/src/System.Net.WebSockets/tests/Configurations.props b/src/System.Net.WebSockets/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Net.WebSockets/tests/Configurations.props
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index ef99c501550c..c75bac301cb9 100644
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index 9eb0b2b41d46..2c6b5cb1908c 100644
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diff --git a/src/System.Numerics.Tensors/ref/Configurations.props b/src/System.Numerics.Tensors/ref/Configurations.props
index fad448931930..a9f828005996 100644
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index fad448931930..a9f828005996 100644
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index 6644453ed1d6..19236e72c58f 100644
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index 410d5b1a0641..1a953479460c 100644
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index 163d9a715ce9..dde33cbb1eda 100644
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index 08513423087e..18d083e5f4d3 100644
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index c9deb74d0be9..c757d86685a8 100644
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index a7358e8ad86d..c9b6c52ff517 100644
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index 336d4b2859cb..d795f8886d3b 100644
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index 688f37d0050c..6076ea3f2295 100644
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index 0ca1bfc137b4..bf959c103133 100644
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index 2c27f0d86a22..f5d3d45ffbf4 100644
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index 4988fc07e1bc..0025ce6cf713 100644
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index 5e830ff8b39b..acf56fa2750e 100644
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index 4c5bf3b44410..86aa0bae312c 100644
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index b0fdeec2af57..76b0f99c587c 100644
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index 8dbecf0f0215..04cb73b1272a 100644
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index 1cd8ced0f64f..d6385a202011 100644
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Uri/tests/UnitTests/Configurations.props b/src/System.Private.Uri/tests/UnitTests/Configurations.props
index 6644453ed1d6..a1eadd7648d8 100644
--- a/src/System.Private.Uri/tests/UnitTests/Configurations.props
+++ b/src/System.Private.Uri/tests/UnitTests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Private.Xml.Linq/Directory.Build.props b/src/System.Private.Xml.Linq/Directory.Build.props
index 7db37403d3d8..f3633e44ac9a 100644
--- a/src/System.Private.Xml.Linq/Directory.Build.props
+++ b/src/System.Private.Xml.Linq/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Private.Xml.Linq/src/Configurations.props b/src/System.Private.Xml.Linq/src/Configurations.props
index f06f40920f8f..95579245fb29 100644
--- a/src/System.Private.Xml.Linq/src/Configurations.props
+++ b/src/System.Private.Xml.Linq/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Private.Xml.Linq/src/Resources/Strings.resx b/src/System.Private.Xml.Linq/src/Resources/Strings.resx
index e0aefb9ab0e8..6b427d8b7a9a 100644
--- a/src/System.Private.Xml.Linq/src/Resources/Strings.resx
+++ b/src/System.Private.Xml.Linq/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props b/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/XDocument.Common/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props b/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/events/Configurations.props b/src/System.Private.Xml.Linq/tests/events/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml.Linq/tests/events/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/events/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml.Linq/tests/misc/Configurations.props b/src/System.Private.Xml.Linq/tests/misc/Configurations.props
index 57b5cf7f917d..29dd700cc3ae 100644
--- a/src/System.Private.Xml.Linq/tests/misc/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/misc/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props b/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
index 57b5cf7f917d..29dd700cc3ae 100644
--- a/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
+++ b/src/System.Private.Xml.Linq/tests/xNodeBuilder/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Private.Xml/Directory.Build.props b/src/System.Private.Xml/Directory.Build.props
index 7db37403d3d8..f3633e44ac9a 100644
--- a/src/System.Private.Xml/Directory.Build.props
+++ b/src/System.Private.Xml/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Private.Xml/src/Configurations.props b/src/System.Private.Xml/src/Configurations.props
index cab746f97ba8..5d1182962c9e 100644
--- a/src/System.Private.Xml/src/Configurations.props
+++ b/src/System.Private.Xml/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Private.Xml/src/Resources/Strings.resx b/src/System.Private.Xml/src/Resources/Strings.resx
index f9e414974f68..944e6f816e14 100644
--- a/src/System.Private.Xml/src/Resources/Strings.resx
+++ b/src/System.Private.Xml/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Private.Xml/tests/Misc/Configurations.props b/src/System.Private.Xml/tests/Misc/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Misc/Configurations.props
+++ b/src/System.Private.Xml/tests/Misc/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props b/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/CharCheckingReader/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props b/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/CustomReader/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props b/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/FactoryReader/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props b/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/NameTable/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props b/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/ReaderSettings/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props b/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/SubtreeReader/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props b/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
+++ b/src/System.Private.Xml/tests/Readers/WrappedReader/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props b/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
+++ b/src/System.Private.Xml/tests/Writers/RwFactory/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props b/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Writers/XmlWriterApi/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props b/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XPath/XPathDocument/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props b/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XPath/XmlDocument/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlConvert/Configurations.props b/src/System.Private.Xml/tests/XmlConvert/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlConvert/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlConvert/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlDocument/Configurations.props b/src/System.Private.Xml/tests/XmlDocument/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlDocument/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlDocument/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props b/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlDocument/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlNodeReader/System.Xml.XmlNodeReader.Tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props b/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/ReadContentAs/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props b/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/Tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props b/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReader/XmlResolver/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props b/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlReaderLib/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlResolver/System.Xml.XmlResolver.Tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/105897_a.xsd b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/105897_a.xsd
index 7dffeaf9a13b..acf1ad5f9ff1 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/105897_a.xsd
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/105897_a.xsd
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <xs:schema targetNamespace="http://schemas.microsoft.com/net/2003/06/policy" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:S="http://www.w3.org/2002/12/soap-envelope" xmlns:tns="http://schemas.microsoft.com/net/2003/06/policy" elementFormDefault="qualified" attributeFormDefault="unqualified" blockDefault="#all">
     <xs:import namespace="http://www.w3.org/2002/12/soap-envelope"/>
     <xs:element name="SelectedPolicies">
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom1.xsd b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom1.xsd
index 163cffd79553..2c0de3b630ef 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom1.xsd
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom1.xsd
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en">
 	<!-- This schema just has two new attributes: foo and bar -->
 	<xs:attribute name="lang" type="xs:language"/>
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom2.xsd b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom2.xsd
index bbfcbe601c21..9c1e79572f9a 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom2.xsd
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/AllowXmlAttributes/custom2.xsd
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en">
 	<!-- This schema just has two new attributes: foo and bar -->
 	<xs:import schemaLocation="v2.xsd"/>
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/XmlSchemaValidatorAPI/200DefAttributes.xsd b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/XmlSchemaValidatorAPI/200DefAttributes.xsd
index 4a06b4bc9ee4..5285e328ec3c 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/XmlSchemaValidatorAPI/200DefAttributes.xsd
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/XmlSchemaValidatorAPI/200DefAttributes.xsd
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:element name="StressElement">
     <xs:complexType>
       <xs:attribute name="attr0" type="xs:int" default="0" />
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug435368.xml b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug435368.xml
index 2edea40dd2fb..f8860ae2133a 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug435368.xml
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug435368.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root xml:lang="en-US">
   <sg1></sg1>
   <a></a>
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xml b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xml
index 7274b6c8fbf2..21f7fc06be87 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xml
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<test xsi:noNamespaceSchemaLocation="XMLSchema1.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<test xsi:noNamespaceSchemaLocation="XMLSchema1.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <listitem>
     <item>
       item
diff --git a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xsd b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xsd
index 02bc179e48c4..7d75e3896240 100644
--- a/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xsd
+++ b/src/System.Private.Xml/tests/XmlSchema/TestFiles/TestData/bug511217.xsd
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:simpleType name="boolean">
     <xs:restriction base="xs:boolean"/>
diff --git a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaSet/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSchema/XmlSchemaValidatorApi/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
index 840f3a0b260b..2260378844bc 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props b/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
index 283e59a7f7bc..6f4a060d826f 100644
--- a/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlSerializer/ReflectionOnly/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Private.Xml/tests/XmlWriter/Configurations.props b/src/System.Private.Xml/tests/XmlWriter/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/XmlWriter/Configurations.props
+++ b/src/System.Private.Xml/tests/XmlWriter/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587a.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587a.txt
index 8f732f9247f2..2025f1766628 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587a.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587a.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out xmlns:id="id" xmlns:cap="capitalizer">
 	<id>first</id>
 	<ID>FIRST</ID>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587b.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587b.txt
index fd9a55e2d8c5..06147a415a97 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587b.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/Bug78587b.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out xmlns:id="id" xmlns:cap="capitalizer">
 	<id>second</id>
 	<ID>SECOND</ID>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Arguments.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Arguments.txt
index fd0b40d00190..beedc19aaf31 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Arguments.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Arguments.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <result xmlns:myObj="urn:my-object">
 	<string>Received a string with value: Hello</string>
 	<double>Received a double with value 3.14</double>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_KeepingState.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_KeepingState.txt
index 972abf919f63..a8443ff050c6 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_KeepingState.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_KeepingState.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <result xmlns:myObj="urn:my-object">
 	<A>27</A>
 	<B>23</B>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Recursion.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Recursion.txt
index 84bfe6b96ba0..41a12f6883f7 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Recursion.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/MyObject_Recursion.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <result xmlns:myObj="urn:my-object">Recursive Function Returning the factorial of five:120</result>
\ No newline at end of file
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/apply-templates.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/apply-templates.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/apply-templates.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/apply-templates.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/copy-of.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/copy-of.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/copy-of.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/copy-of.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/for-each.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/for-each.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/for-each.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/for-each.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectDef.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectDef.txt
index 1d34297e32f2..dbbfbf819b30 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectDef.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectDef.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <result xmlns:myObj="urn:my-object">
 <func1>1.Test1</func1>
 
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectLongNS.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectLongNS.txt
index 6337c77fb48b..dbd01f3bcf82 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectLongNS.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/myObjectLongNS.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <result xmlns:myObj="http://www.microsoft.com/this/is/a/very/long/namespace/uri/to/do/the/api/testing/for/xslt/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/0123456789/">
 <func1>1.Test1</func1>
 
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param2.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param2.txt
index 9bc79f99f619..d61e7bae1565 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param2.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param2.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>1</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param3.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param3.txt
index cbd799b2f166..476c5844995a 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param3.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param3.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>2</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param4.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param4.txt
index cbd799b2f166..476c5844995a 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param4.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/param4.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>2</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/sort.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/sort.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/sort.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/sort.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/value-of.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/value-of.txt
index ee683d1b59a8..4310849a8f22 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/value-of.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/value-of.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <title>XML Primer</title>
\ No newline at end of file
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable2.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable2.txt
index 9bc79f99f619..d61e7bae1565 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable2.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable2.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>1</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable3.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable3.txt
index cbd799b2f166..476c5844995a 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable3.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable3.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>2</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable4.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable4.txt
index cbd799b2f166..476c5844995a 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable4.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/variable4.txt
@@ -1,2 +1 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>2</out>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/with-param.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/with-param.txt
index 1f0131e79c61..d20a30281dff 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/with-param.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/baseline/with-param.txt
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <out>
   <title>XML Primer</title>
   <title>XSLT Basics</title>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/bug482971.xsl b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/bug482971.xsl
index a75a597ca4b5..c92030e728ba 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/bug482971.xsl
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltApiV2/bug482971.xsl
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output method="xml" encoding="Shift_JIS" indent="yes" />
 
   <xsl:template match="/">
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source.xml
index c64873f9d2a5..22c8e551d213 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <date>2001-07-04T12:08:56+02:00</date>
   <date2>2001-09-12T07:59:02+02:00</date2>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source1.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source1.xml
index ba509bafa930..7f458786630f 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source1.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/datetime-source1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <timespan>P1M</timespan>
   <timespan>P3M</timespan>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/math-source1.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/math-source1.xml
index c1e4e83adc83..1df608dcd189 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/math-source1.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/math-source1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <values>
     <value>7</value>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source.xml
index b4a37fa19a11..1fc24c56256b 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <email>
     <valid>johndoe@microsoft.com</valid>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source1.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source1.xml
index 54d6f7121241..f83fcfb04643 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source1.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/regex-source1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <input>The quick brown fox jumps over a lazy dog.</input>
 </data>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source.xml
index 96eeaece5721..c3c7061f1f97 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <set>
     <foo bar="baz">1</foo>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source1.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source1.xml
index 69aba23177e9..1c2b18049bcb 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source1.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/sets-source1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <data>
   <doc>
     <city name="Paris" country="France"/>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source.xml
index e7a51ee59c8b..28fcc8d71044 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<data>
+<data>
     <email>john@doe.com</email>
     <name>Danny</name>
     <uri>http://www.example.com/my résumé.html</uri>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source1.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source1.xml
index 0f845512fab5..2ef16b94be73 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source1.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/EXslt/string-source1.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<data>
+<data>
   <input>The Quick Brown Fox Jumps Over a Lazy Dog.</input>
   <input-ru>Если ты можешь это прочитать, ты наверное немного знаешь русский язык.</input-ru>
 </data>
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/Schematron/TestSchema.xml b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/Schematron/TestSchema.xml
index 925e436199c4..3b15549767d7 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/Schematron/TestSchema.xml
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/XsltScenarios/Schematron/TestSchema.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <sch:schema xmlns:sch="http://www.ascc.net/xml/schematron">
     <sch:ns uri="http://www.topologi.com/example" prefix="ex"/>
     <sch:pattern name="Check structure">
diff --git a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/xsltc/baseline/cnt10.txt b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/xsltc/baseline/cnt10.txt
index cdd5f01c1f97..57d923614b13 100644
--- a/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/xsltc/baseline/cnt10.txt
+++ b/src/System.Private.Xml/tests/Xslt/TestFiles/TestData/xsltc/baseline/cnt10.txt
@@ -1,3 +1,2 @@
-<?xml version="1.0" encoding="utf-8"?>
 	DIFFERENT	    
         Hello, world!
\ No newline at end of file
diff --git a/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props b/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
index 782a68050ce2..d8630445849f 100644
--- a/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netfx;
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props b/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props b/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props
+++ b/src/System.Private.Xml/tests/Xslt/XsltCompiler/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Private.Xml/tests/Xslt/XsltCompiler/Identity.xslt b/src/System.Private.Xml/tests/Xslt/XsltCompiler/Identity.xslt
index 005048ba120a..afec73bebf0e 100644
--- a/src/System.Private.Xml/tests/Xslt/XsltCompiler/Identity.xslt
+++ b/src/System.Private.Xml/tests/Xslt/XsltCompiler/Identity.xslt
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
   <xsl:output method="xml" indent="no" />
diff --git a/src/System.Private.Xml/tests/Xslt/XsltCompiler/IdentityTransform.xslt b/src/System.Private.Xml/tests/Xslt/XsltCompiler/IdentityTransform.xslt
index 005048ba120a..afec73bebf0e 100644
--- a/src/System.Private.Xml/tests/Xslt/XsltCompiler/IdentityTransform.xslt
+++ b/src/System.Private.Xml/tests/Xslt/XsltCompiler/IdentityTransform.xslt
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
   <xsl:output method="xml" indent="no" />
diff --git a/src/System.Private.Xml/tests/Xslt/XsltCompiler/TestStylesheet.xslt b/src/System.Private.Xml/tests/Xslt/XsltCompiler/TestStylesheet.xslt
index c6207f4423d9..4f2ead16153b 100644
--- a/src/System.Private.Xml/tests/Xslt/XsltCompiler/TestStylesheet.xslt
+++ b/src/System.Private.Xml/tests/Xslt/XsltCompiler/TestStylesheet.xslt
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
   <xsl:output method="xml" indent="yes" />
diff --git a/src/System.Reflection.Context/Directory.Build.props b/src/System.Reflection.Context/Directory.Build.props
index c8455b0cc525..14f75a50fdb4 100644
--- a/src/System.Reflection.Context/Directory.Build.props
+++ b/src/System.Reflection.Context/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj b/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj
index 4998968ebe68..66dc14a19dae 100644
--- a/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj
+++ b/src/System.Reflection.Context/pkg/System.Reflection.Context.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Reflection.Context/ref/Configurations.props b/src/System.Reflection.Context/ref/Configurations.props
index cf9ba1f9f43e..2b37a93d1ab1 100644
--- a/src/System.Reflection.Context/ref/Configurations.props
+++ b/src/System.Reflection.Context/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Context/src/Configurations.props b/src/System.Reflection.Context/src/Configurations.props
index 99303c077969..090e9478a0fc 100644
--- a/src/System.Reflection.Context/src/Configurations.props
+++ b/src/System.Reflection.Context/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Reflection.Context/src/Resources/Strings.resx b/src/System.Reflection.Context/src/Resources/Strings.resx
index 27ab6ebb0c8f..faa2e9cbb08c 100644
--- a/src/System.Reflection.Context/src/Resources/Strings.resx
+++ b/src/System.Reflection.Context/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Reflection.Context/tests/Configurations.props b/src/System.Reflection.Context/tests/Configurations.props
index 0bc2a7e887e2..1a037adc3e7c 100644
--- a/src/System.Reflection.Context/tests/Configurations.props
+++ b/src/System.Reflection.Context/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Reflection.Context/tests/Properties/Resources.resx b/src/System.Reflection.Context/tests/Properties/Resources.resx
index 7b1976b912e5..5848e04425f8 100644
--- a/src/System.Reflection.Context/tests/Properties/Resources.resx
+++ b/src/System.Reflection.Context/tests/Properties/Resources.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Reflection.DispatchProxy/Directory.Build.props b/src/System.Reflection.DispatchProxy/Directory.Build.props
index 7fb3501615a7..1d44f78cd374 100644
--- a/src/System.Reflection.DispatchProxy/Directory.Build.props
+++ b/src/System.Reflection.DispatchProxy/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.5.0</AssemblyVersion>
diff --git a/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj b/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj
index ee8ba88e9619..d45fd2ae9ae7 100644
--- a/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj
+++ b/src/System.Reflection.DispatchProxy/pkg/System.Reflection.DispatchProxy.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Reflection.DispatchProxy.csproj">
diff --git a/src/System.Reflection.DispatchProxy/ref/Configurations.props b/src/System.Reflection.DispatchProxy/ref/Configurations.props
index 222b0534e7ca..e963a92f1ba5 100644
--- a/src/System.Reflection.DispatchProxy/ref/Configurations.props
+++ b/src/System.Reflection.DispatchProxy/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Reflection.DispatchProxy/src/Configurations.props b/src/System.Reflection.DispatchProxy/src/Configurations.props
index 8edb5d5db907..e85d2e0e20a5 100644
--- a/src/System.Reflection.DispatchProxy/src/Configurations.props
+++ b/src/System.Reflection.DispatchProxy/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       net461;
diff --git a/src/System.Reflection.DispatchProxy/src/Resources/Strings.resx b/src/System.Reflection.DispatchProxy/src/Resources/Strings.resx
index 6817eaa4691c..207ef13683a0 100644
--- a/src/System.Reflection.DispatchProxy/src/Resources/Strings.resx
+++ b/src/System.Reflection.DispatchProxy/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Reflection.DispatchProxy/tests/Configurations.props b/src/System.Reflection.DispatchProxy/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Reflection.DispatchProxy/tests/Configurations.props
+++ b/src/System.Reflection.DispatchProxy/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit.ILGeneration/Directory.Build.props b/src/System.Reflection.Emit.ILGeneration/Directory.Build.props
index a58102bb0272..052e35e97a1a 100644
--- a/src/System.Reflection.Emit.ILGeneration/Directory.Build.props
+++ b/src/System.Reflection.Emit.ILGeneration/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Reflection.Emit.ILGeneration/pkg/System.Reflection.Emit.ILGeneration.pkgproj b/src/System.Reflection.Emit.ILGeneration/pkg/System.Reflection.Emit.ILGeneration.pkgproj
index c2bf001a3b7f..3f683196aba3 100644
--- a/src/System.Reflection.Emit.ILGeneration/pkg/System.Reflection.Emit.ILGeneration.pkgproj
+++ b/src/System.Reflection.Emit.ILGeneration/pkg/System.Reflection.Emit.ILGeneration.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Reflection.Emit.ILGeneration/ref/Configurations.props b/src/System.Reflection.Emit.ILGeneration/ref/Configurations.props
index 032b6f7b2283..aeccaf726952 100644
--- a/src/System.Reflection.Emit.ILGeneration/ref/Configurations.props
+++ b/src/System.Reflection.Emit.ILGeneration/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit.ILGeneration/src/Configurations.props b/src/System.Reflection.Emit.ILGeneration/src/Configurations.props
index d2362b631421..0b9482c33258 100644
--- a/src/System.Reflection.Emit.ILGeneration/src/Configurations.props
+++ b/src/System.Reflection.Emit.ILGeneration/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit.ILGeneration/src/Resources/Strings.resx b/src/System.Reflection.Emit.ILGeneration/src/Resources/Strings.resx
index 4c23b5322bfa..c30e40e50722 100644
--- a/src/System.Reflection.Emit.ILGeneration/src/Resources/Strings.resx
+++ b/src/System.Reflection.Emit.ILGeneration/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props b/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props
index 323c11cf6937..55d2de1d23f8 100644
--- a/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props
+++ b/src/System.Reflection.Emit.ILGeneration/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Reflection.Emit.Lightweight/Directory.Build.props b/src/System.Reflection.Emit.Lightweight/Directory.Build.props
index a58102bb0272..052e35e97a1a 100644
--- a/src/System.Reflection.Emit.Lightweight/Directory.Build.props
+++ b/src/System.Reflection.Emit.Lightweight/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Reflection.Emit.Lightweight/pkg/System.Reflection.Emit.Lightweight.pkgproj b/src/System.Reflection.Emit.Lightweight/pkg/System.Reflection.Emit.Lightweight.pkgproj
index a26c53da0734..797a7ab3133c 100644
--- a/src/System.Reflection.Emit.Lightweight/pkg/System.Reflection.Emit.Lightweight.pkgproj
+++ b/src/System.Reflection.Emit.Lightweight/pkg/System.Reflection.Emit.Lightweight.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Reflection.Emit.Lightweight/ref/Configurations.props b/src/System.Reflection.Emit.Lightweight/ref/Configurations.props
index 032b6f7b2283..aeccaf726952 100644
--- a/src/System.Reflection.Emit.Lightweight/ref/Configurations.props
+++ b/src/System.Reflection.Emit.Lightweight/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit.Lightweight/src/Configurations.props b/src/System.Reflection.Emit.Lightweight/src/Configurations.props
index 8d98c85a083c..a8692c188781 100644
--- a/src/System.Reflection.Emit.Lightweight/src/Configurations.props
+++ b/src/System.Reflection.Emit.Lightweight/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit.Lightweight/src/Resources/Strings.resx b/src/System.Reflection.Emit.Lightweight/src/Resources/Strings.resx
index 241e41b2df1e..d6c9764c76e9 100644
--- a/src/System.Reflection.Emit.Lightweight/src/Resources/Strings.resx
+++ b/src/System.Reflection.Emit.Lightweight/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.Reflection.Emit.Lightweight/tests/Configurations.props b/src/System.Reflection.Emit.Lightweight/tests/Configurations.props
index 323c11cf6937..55d2de1d23f8 100644
--- a/src/System.Reflection.Emit.Lightweight/tests/Configurations.props
+++ b/src/System.Reflection.Emit.Lightweight/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Reflection.Emit/Directory.Build.props b/src/System.Reflection.Emit/Directory.Build.props
index 2383171cb6a2..bdcbac1e7129 100644
--- a/src/System.Reflection.Emit/Directory.Build.props
+++ b/src/System.Reflection.Emit/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Reflection.Emit/pkg/System.Reflection.Emit.pkgproj b/src/System.Reflection.Emit/pkg/System.Reflection.Emit.pkgproj
index 4ef69d79fbc4..f42c55464a13 100644
--- a/src/System.Reflection.Emit/pkg/System.Reflection.Emit.pkgproj
+++ b/src/System.Reflection.Emit/pkg/System.Reflection.Emit.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Reflection.Emit/ref/Configurations.props b/src/System.Reflection.Emit/ref/Configurations.props
index 096a5832c35d..98864dfd55e6 100644
--- a/src/System.Reflection.Emit/ref/Configurations.props
+++ b/src/System.Reflection.Emit/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit/src/Configurations.props b/src/System.Reflection.Emit/src/Configurations.props
index 130b3ba001a4..e40b174731bd 100644
--- a/src/System.Reflection.Emit/src/Configurations.props
+++ b/src/System.Reflection.Emit/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Reflection.Emit/src/Resources/Strings.resx b/src/System.Reflection.Emit/src/Resources/Strings.resx
index 5bf6a5d5c90a..7d1a5ec743a2 100644
--- a/src/System.Reflection.Emit/src/Resources/Strings.resx
+++ b/src/System.Reflection.Emit/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.Reflection.Emit/tests/Configurations.props b/src/System.Reflection.Emit/tests/Configurations.props
index 323c11cf6937..55d2de1d23f8 100644
--- a/src/System.Reflection.Emit/tests/Configurations.props
+++ b/src/System.Reflection.Emit/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
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diff --git a/src/System.Reflection.Extensions/Directory.Build.props b/src/System.Reflection.Extensions/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Reflection.Extensions/Directory.Build.props
+++ b/src/System.Reflection.Extensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Reflection.Extensions/ref/Configurations.props b/src/System.Reflection.Extensions/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Reflection.Extensions/ref/Configurations.props
+++ b/src/System.Reflection.Extensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.Extensions/src/Configurations.props b/src/System.Reflection.Extensions/src/Configurations.props
index 8c16b2d185da..7dc2eed8d4e9 100644
--- a/src/System.Reflection.Extensions/src/Configurations.props
+++ b/src/System.Reflection.Extensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
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diff --git a/src/System.Reflection.Extensions/tests/Configurations.props b/src/System.Reflection.Extensions/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Reflection.Extensions/tests/Configurations.props
+++ b/src/System.Reflection.Extensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.Metadata/Directory.Build.props b/src/System.Reflection.Metadata/Directory.Build.props
index a311eebbbad0..177a3fa70ece 100644
--- a/src/System.Reflection.Metadata/Directory.Build.props
+++ b/src/System.Reflection.Metadata/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <PackageVersion>1.7.0</PackageVersion>
diff --git a/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj b/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj
index 428d66c52f20..1cdcce7a3291 100644
--- a/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj
+++ b/src/System.Reflection.Metadata/pkg/System.Reflection.Metadata.pkgproj
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Reflection.Metadata.csproj">
diff --git a/src/System.Reflection.Metadata/ref/Configurations.props b/src/System.Reflection.Metadata/ref/Configurations.props
index b1b9786709af..6cc75ebaa576 100644
--- a/src/System.Reflection.Metadata/ref/Configurations.props
+++ b/src/System.Reflection.Metadata/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.Metadata/src/Configurations.props b/src/System.Reflection.Metadata/src/Configurations.props
index b1b9786709af..6cc75ebaa576 100644
--- a/src/System.Reflection.Metadata/src/Configurations.props
+++ b/src/System.Reflection.Metadata/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.Metadata/src/Resources/Strings.resx b/src/System.Reflection.Metadata/src/Resources/Strings.resx
index 879ad7ced276..2ae96123ce87 100644
--- a/src/System.Reflection.Metadata/src/Resources/Strings.resx
+++ b/src/System.Reflection.Metadata/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
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diff --git a/src/System.Reflection.Metadata/tests/Configurations.props b/src/System.Reflection.Metadata/tests/Configurations.props
index 361031dde464..7c754dfedf26 100644
--- a/src/System.Reflection.Metadata/tests/Configurations.props
+++ b/src/System.Reflection.Metadata/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <!-- uap build currently failing: https://github.com/dotnet/corefx/issues/31962 -->
     <BuildConfigurations>
diff --git a/src/System.Reflection.MetadataLoadContext/Directory.Build.props b/src/System.Reflection.MetadataLoadContext/Directory.Build.props
index b5b48f598332..aa74bf5413dc 100644
--- a/src/System.Reflection.MetadataLoadContext/Directory.Build.props
+++ b/src/System.Reflection.MetadataLoadContext/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Reflection.MetadataLoadContext/pkg/System.Reflection.MetadataLoadContext.pkgproj b/src/System.Reflection.MetadataLoadContext/pkg/System.Reflection.MetadataLoadContext.pkgproj
index 0632fe32f5e9..850a3f2e0a80 100644
--- a/src/System.Reflection.MetadataLoadContext/pkg/System.Reflection.MetadataLoadContext.pkgproj
+++ b/src/System.Reflection.MetadataLoadContext/pkg/System.Reflection.MetadataLoadContext.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Reflection.MetadataLoadContext.csproj">
diff --git a/src/System.Reflection.MetadataLoadContext/ref/Configurations.props b/src/System.Reflection.MetadataLoadContext/ref/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Reflection.MetadataLoadContext/ref/Configurations.props
+++ b/src/System.Reflection.MetadataLoadContext/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection.MetadataLoadContext/src/Configurations.props b/src/System.Reflection.MetadataLoadContext/src/Configurations.props
index 093f19aa9028..38a2a87a19e0 100644
--- a/src/System.Reflection.MetadataLoadContext/src/Configurations.props
+++ b/src/System.Reflection.MetadataLoadContext/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.MetadataLoadContext/src/Resources/Strings.resx b/src/System.Reflection.MetadataLoadContext/src/Resources/Strings.resx
index cb6d63179776..6e447252b303 100644
--- a/src/System.Reflection.MetadataLoadContext/src/Resources/Strings.resx
+++ b/src/System.Reflection.MetadataLoadContext/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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     Microsoft ResX Schema 
     
diff --git a/src/System.Reflection.MetadataLoadContext/tests/Configurations.props b/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
+++ b/src/System.Reflection.MetadataLoadContext/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.Primitives/Directory.Build.props b/src/System.Reflection.Primitives/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Reflection.Primitives/Directory.Build.props
+++ b/src/System.Reflection.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Reflection.Primitives/ref/Configurations.props b/src/System.Reflection.Primitives/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Reflection.Primitives/ref/Configurations.props
+++ b/src/System.Reflection.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection.Primitives/src/Configurations.props b/src/System.Reflection.Primitives/src/Configurations.props
index c4b354d18fcd..8e16bc6010c4 100644
--- a/src/System.Reflection.Primitives/src/Configurations.props
+++ b/src/System.Reflection.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.TypeExtensions/Directory.Build.props b/src/System.Reflection.TypeExtensions/Directory.Build.props
index 80ffe16c4c29..0cef3cdffff2 100644
--- a/src/System.Reflection.TypeExtensions/Directory.Build.props
+++ b/src/System.Reflection.TypeExtensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj b/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
index 76c691dfe046..7a59a36fc3b3 100644
--- a/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
+++ b/src/System.Reflection.TypeExtensions/pkg/System.Reflection.TypeExtensions.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
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diff --git a/src/System.Reflection.TypeExtensions/ref/Configurations.props b/src/System.Reflection.TypeExtensions/ref/Configurations.props
index 2a7570a4d9b5..ed1dc44dd487 100644
--- a/src/System.Reflection.TypeExtensions/ref/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection.TypeExtensions/src/Configurations.props b/src/System.Reflection.TypeExtensions/src/Configurations.props
index 530a4ae906af..65b28789980d 100644
--- a/src/System.Reflection.TypeExtensions/src/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <PackageConfigurations>
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diff --git a/src/System.Reflection.TypeExtensions/src/Resources/Strings.resx b/src/System.Reflection.TypeExtensions/src/Resources/Strings.resx
index 775ec06d455d..f967017f858d 100644
--- a/src/System.Reflection.TypeExtensions/src/Resources/Strings.resx
+++ b/src/System.Reflection.TypeExtensions/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
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diff --git a/src/System.Reflection.TypeExtensions/tests/Configurations.props b/src/System.Reflection.TypeExtensions/tests/Configurations.props
index 4c35b6322355..2bc19ff4170e 100644
--- a/src/System.Reflection.TypeExtensions/tests/Configurations.props
+++ b/src/System.Reflection.TypeExtensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Reflection/Directory.Build.props b/src/System.Reflection/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Reflection/Directory.Build.props
+++ b/src/System.Reflection/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/ref/Configurations.props b/src/System.Reflection/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Reflection/ref/Configurations.props
+++ b/src/System.Reflection/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.Reflection/src/Configurations.props b/src/System.Reflection/src/Configurations.props
index c4b354d18fcd..8e16bc6010c4 100644
--- a/src/System.Reflection/src/Configurations.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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       uapaot-Windows_NT;
diff --git a/src/System.Reflection/tests/AssemblyVersion/Configurations.props b/src/System.Reflection/tests/AssemblyVersion/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Reflection/tests/AssemblyVersion/Configurations.props
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-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/Configurations.props b/src/System.Reflection/tests/Configurations.props
index 2c27f0d86a22..e43964ecf9e7 100644
--- a/src/System.Reflection/tests/Configurations.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/CoreCLR/Configurations.props b/src/System.Reflection/tests/CoreCLR/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Reflection/tests/CoreCLR/Configurations.props
+++ b/src/System.Reflection/tests/CoreCLR/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props b/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
+++ b/src/System.Reflection/tests/ForwardedTypesAssembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/TestAssembly/Configurations.props b/src/System.Reflection/tests/TestAssembly/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Reflection/tests/TestAssembly/Configurations.props
+++ b/src/System.Reflection/tests/TestAssembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Reflection/tests/TestExe/Configurations.props b/src/System.Reflection/tests/TestExe/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Reflection/tests/TestExe/Configurations.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Reflection/tests/UnloadableAssembly/Configurations.props b/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
+++ b/src/System.Reflection/tests/UnloadableAssembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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       netstandard;
diff --git a/src/System.Resources.Reader/Directory.Build.props b/src/System.Resources.Reader/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Resources.Reader/Directory.Build.props
+++ b/src/System.Resources.Reader/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Resources.Reader/ref/Configurations.props b/src/System.Resources.Reader/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Resources.Reader/ref/Configurations.props
+++ b/src/System.Resources.Reader/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Resources.Reader/src/Configurations.props b/src/System.Resources.Reader/src/Configurations.props
index 296b296ee218..aa1d34875976 100644
--- a/src/System.Resources.Reader/src/Configurations.props
+++ b/src/System.Resources.Reader/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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     <BuildConfigurations>
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diff --git a/src/System.Resources.Reader/tests/Configurations.props b/src/System.Resources.Reader/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Resources.Reader/tests/Configurations.props
+++ b/src/System.Resources.Reader/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Resources.ResourceManager/Directory.Build.props b/src/System.Resources.ResourceManager/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Resources.ResourceManager/Directory.Build.props
+++ b/src/System.Resources.ResourceManager/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Resources.ResourceManager/ref/Configurations.props b/src/System.Resources.ResourceManager/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Resources.ResourceManager/ref/Configurations.props
+++ b/src/System.Resources.ResourceManager/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Resources.ResourceManager/src/Configurations.props b/src/System.Resources.ResourceManager/src/Configurations.props
index c4b354d18fcd..8e16bc6010c4 100644
--- a/src/System.Resources.ResourceManager/src/Configurations.props
+++ b/src/System.Resources.ResourceManager/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Resources.ResourceManager/tests/Configurations.props b/src/System.Resources.ResourceManager/tests/Configurations.props
index 68fc5c0f768d..04ae535c9867 100644
--- a/src/System.Resources.ResourceManager/tests/Configurations.props
+++ b/src/System.Resources.ResourceManager/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestClassWithoutNeutralResources.fr.resx b/src/System.Resources.ResourceManager/tests/Resources/TestClassWithoutNeutralResources.fr.resx
index 11f5fe1279a1..edd5ea069468 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestClassWithoutNeutralResources.fr.resx
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestResx.es-MX.resx b/src/System.Resources.ResourceManager/tests/Resources/TestResx.es-MX.resx
index 85eaa6987cc8..0d4a4a6c52f6 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestResx.es-MX.resx
+++ b/src/System.Resources.ResourceManager/tests/Resources/TestResx.es-MX.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestResx.es.resx b/src/System.Resources.ResourceManager/tests/Resources/TestResx.es.resx
index dc863f8600a8..ba57fecd7788 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestResx.es.resx
+++ b/src/System.Resources.ResourceManager/tests/Resources/TestResx.es.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestResx.fr-FR.resx b/src/System.Resources.ResourceManager/tests/Resources/TestResx.fr-FR.resx
index e5852169b6cb..38eb20f3e62b 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestResx.fr-FR.resx
+++ b/src/System.Resources.ResourceManager/tests/Resources/TestResx.fr-FR.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestResx.netstandard17.resx b/src/System.Resources.ResourceManager/tests/Resources/TestResx.netstandard17.resx
index b94de05d5916..6ee9eecfe2af 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestResx.netstandard17.resx
+++ b/src/System.Resources.ResourceManager/tests/Resources/TestResx.netstandard17.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.ResourceManager/tests/Resources/TestResx.resx b/src/System.Resources.ResourceManager/tests/Resources/TestResx.resx
index 749f79ff2046..d95ce4402abe 100644
--- a/src/System.Resources.ResourceManager/tests/Resources/TestResx.resx
+++ b/src/System.Resources.ResourceManager/tests/Resources/TestResx.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.Writer/Directory.Build.props b/src/System.Resources.Writer/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Resources.Writer/Directory.Build.props
+++ b/src/System.Resources.Writer/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Resources.Writer/ref/Configurations.props b/src/System.Resources.Writer/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Resources.Writer/ref/Configurations.props
+++ b/src/System.Resources.Writer/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Resources.Writer/src/Configurations.props b/src/System.Resources.Writer/src/Configurations.props
index 296b296ee218..aa1d34875976 100644
--- a/src/System.Resources.Writer/src/Configurations.props
+++ b/src/System.Resources.Writer/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Resources.Writer/src/Resources/Strings.resx b/src/System.Resources.Writer/src/Resources/Strings.resx
index d846ba40e306..dc7bf079c3bb 100644
--- a/src/System.Resources.Writer/src/Resources/Strings.resx
+++ b/src/System.Resources.Writer/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Resources.Writer/tests/Configurations.props b/src/System.Resources.Writer/tests/Configurations.props
index df9b80b230a8..ff0d415e4593 100644
--- a/src/System.Resources.Writer/tests/Configurations.props
+++ b/src/System.Resources.Writer/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Caching/Directory.Build.props b/src/System.Runtime.Caching/Directory.Build.props
index 7b2836163cb7..131fb6770cd1 100644
--- a/src/System.Runtime.Caching/Directory.Build.props
+++ b/src/System.Runtime.Caching/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <!-- this assembly is inbox in desktop, do not version it unless you
diff --git a/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj b/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
index 2eec066552c3..2fc60ca2ea0e 100644
--- a/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
+++ b/src/System.Runtime.Caching/pkg/System.Runtime.Caching.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Runtime.Caching/ref/Configurations.props b/src/System.Runtime.Caching/ref/Configurations.props
index 1cd8ced0f64f..2870dced4592 100644
--- a/src/System.Runtime.Caching/ref/Configurations.props
+++ b/src/System.Runtime.Caching/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Caching/src/Configurations.props b/src/System.Runtime.Caching/src/Configurations.props
index c70967e8829b..ed3c92efa0d9 100644
--- a/src/System.Runtime.Caching/src/Configurations.props
+++ b/src/System.Runtime.Caching/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Caching/src/Resources/Strings.resx b/src/System.Runtime.Caching/src/Resources/Strings.resx
index 9ac10ce4eddb..92219ad30831 100644
--- a/src/System.Runtime.Caching/src/Resources/Strings.resx
+++ b/src/System.Runtime.Caching/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.Runtime.Caching/tests/Configurations.props b/src/System.Runtime.Caching/tests/Configurations.props
index 206336e6d841..2afdc55d7f2c 100644
--- a/src/System.Runtime.Caching/tests/Configurations.props
+++ b/src/System.Runtime.Caching/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props b/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
index d0daf01f8f90..0eef24e4ca41 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.5.0</AssemblyVersion>
diff --git a/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj b/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj
index 8219ea206436..dff6b293fd54 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj
+++ b/src/System.Runtime.CompilerServices.Unsafe/pkg/System.Runtime.CompilerServices.Unsafe.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <PackageIndex Include="$(RepoRoot)\pkg\baseline\packageBaseline.1.1.json" />
diff --git a/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
index 975d55ecff8d..4e489da4b371 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.0;
diff --git a/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
index 597ef15f438e..3c29fb6da616 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0;
diff --git a/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props b/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
index 1cd8ced0f64f..d6385a202011 100644
--- a/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
+++ b/src/System.Runtime.CompilerServices.Unsafe/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props b/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
+++ b/src/System.Runtime.CompilerServices.VisualC/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
index 5e830ff8b39b..acf56fa2750e 100644
--- a/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
index 296b296ee218..aa1d34875976 100644
--- a/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props b/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
+++ b/src/System.Runtime.CompilerServices.VisualC/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/Directory.Build.props b/src/System.Runtime.Extensions/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Runtime.Extensions/Directory.Build.props
+++ b/src/System.Runtime.Extensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Extensions/ref/Configurations.props b/src/System.Runtime.Extensions/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Extensions/ref/Configurations.props
+++ b/src/System.Runtime.Extensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Extensions/src/Configurations.props b/src/System.Runtime.Extensions/src/Configurations.props
index a2b28a2d7864..29e6e7bc90d4 100644
--- a/src/System.Runtime.Extensions/src/Configurations.props
+++ b/src/System.Runtime.Extensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Runtime.Extensions/src/Resources/Strings.resx b/src/System.Runtime.Extensions/src/Resources/Strings.resx
index ca6e57270fe5..0223e8d2ad29 100644
--- a/src/System.Runtime.Extensions/src/Resources/Strings.resx
+++ b/src/System.Runtime.Extensions/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props b/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/AssemblyResolveTestApp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/tests/Configurations.props b/src/System.Runtime.Extensions/tests/Configurations.props
index 20850ef0b7af..231484cfa97c 100644
--- a/src/System.Runtime.Extensions/tests/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime.Extensions/tests/Performance/Configurations.props b/src/System.Runtime.Extensions/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Extensions/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/tests/TestApp/Configurations.props b/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/TestApp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/tests/TestApp/Resources/Strings.resx b/src/System.Runtime.Extensions/tests/TestApp/Resources/Strings.resx
index 05d1bda4fabd..4b84912f1d33 100644
--- a/src/System.Runtime.Extensions/tests/TestApp/Resources/Strings.resx
+++ b/src/System.Runtime.Extensions/tests/TestApp/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props b/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/TestAppOutsideOfTPA/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props b/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
+++ b/src/System.Runtime.Extensions/tests/VoidMainWithExitCodeApp/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Handles/Directory.Build.props b/src/System.Runtime.Handles/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Runtime.Handles/Directory.Build.props
+++ b/src/System.Runtime.Handles/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Handles/ref/Configurations.props b/src/System.Runtime.Handles/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Handles/ref/Configurations.props
+++ b/src/System.Runtime.Handles/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Handles/src/Configurations.props b/src/System.Runtime.Handles/src/Configurations.props
index 74ab6cde0598..31322005d782 100644
--- a/src/System.Runtime.Handles/src/Configurations.props
+++ b/src/System.Runtime.Handles/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.Handles/tests/Configurations.props b/src/System.Runtime.Handles/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Handles/tests/Configurations.props
+++ b/src/System.Runtime.Handles/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props b/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
index 761e10102c4d..21df61f36c2f 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
index af6024e26b1e..cd8f3815a809 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/src/Resources/Strings.resx b/src/System.Runtime.InteropServices.RuntimeInformation/src/Resources/Strings.resx
index 5d87c90339d0..e554cfe1fe2e 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/src/Resources/Strings.resx
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props b/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
index c4f429f8d5f8..07ecbe269b53 100644
--- a/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices.RuntimeInformation/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Unix;
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props b/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
index b56a613ad357..5fba4d1a181e 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/src/Resources/Strings.resx b/src/System.Runtime.InteropServices.WindowsRuntime/src/Resources/Strings.resx
index 1e8912fc3fc1..a1e87ad2d4bb 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/src/Resources/Strings.resx
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props b/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
index b56a613ad357..5fba4d1a181e 100644
--- a/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices.WindowsRuntime/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.InteropServices/Directory.Build.props b/src/System.Runtime.InteropServices/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Runtime.InteropServices/Directory.Build.props
+++ b/src/System.Runtime.InteropServices/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.InteropServices/ref/Configurations.props b/src/System.Runtime.InteropServices/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.InteropServices/ref/Configurations.props
+++ b/src/System.Runtime.InteropServices/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.InteropServices/src/Configurations.props b/src/System.Runtime.InteropServices/src/Configurations.props
index 5f04e4fc0a36..1a0eb0f96e3f 100644
--- a/src/System.Runtime.InteropServices/src/Configurations.props
+++ b/src/System.Runtime.InteropServices/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.InteropServices/src/Resources/Strings.resx b/src/System.Runtime.InteropServices/src/Resources/Strings.resx
index 4861a46c626c..e6f882c8df8f 100644
--- a/src/System.Runtime.InteropServices/src/Resources/Strings.resx
+++ b/src/System.Runtime.InteropServices/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.InteropServices/tests/Configurations.props b/src/System.Runtime.InteropServices/tests/Configurations.props
index 87d84f9932e8..6820973243aa 100644
--- a/src/System.Runtime.InteropServices/tests/Configurations.props
+++ b/src/System.Runtime.InteropServices/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Intrinsics/Directory.Build.props b/src/System.Runtime.Intrinsics/Directory.Build.props
index 8a0cd26d61e3..107531f3585b 100644
--- a/src/System.Runtime.Intrinsics/Directory.Build.props
+++ b/src/System.Runtime.Intrinsics/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Runtime.Intrinsics/ref/Configurations.props b/src/System.Runtime.Intrinsics/ref/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Runtime.Intrinsics/ref/Configurations.props
+++ b/src/System.Runtime.Intrinsics/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Intrinsics/src/Configurations.props b/src/System.Runtime.Intrinsics/src/Configurations.props
index 797a012591bf..002c6d3b9d61 100644
--- a/src/System.Runtime.Intrinsics/src/Configurations.props
+++ b/src/System.Runtime.Intrinsics/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime.Loader/Directory.Build.props b/src/System.Runtime.Loader/Directory.Build.props
index 4cb8b622783c..cdd8d84dddb4 100644
--- a/src/System.Runtime.Loader/Directory.Build.props
+++ b/src/System.Runtime.Loader/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.0.0</AssemblyVersion>
diff --git a/src/System.Runtime.Loader/ref/Configurations.props b/src/System.Runtime.Loader/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Loader/ref/Configurations.props
+++ b/src/System.Runtime.Loader/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/src/Configurations.props b/src/System.Runtime.Loader/src/Configurations.props
index cab746f97ba8..8b997a7f94c0 100644
--- a/src/System.Runtime.Loader/src/Configurations.props
+++ b/src/System.Runtime.Loader/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime.Loader/tests/Configurations.props b/src/System.Runtime.Loader/tests/Configurations.props
index 8f23f6951c17..ad97fa89fc42 100644
--- a/src/System.Runtime.Loader/tests/Configurations.props
+++ b/src/System.Runtime.Loader/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props b/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
+++ b/src/System.Runtime.Loader/tests/DefaultContext/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props b/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
+++ b/src/System.Runtime.Loader/tests/RefEmitLoadContext/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Noop.Assembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
index 4c35b6322355..febffb03ac69 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
index 093f19aa9028..68ac7b9c023b 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.Assembly2/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
index 093f19aa9028..68ac7b9c023b 100644
--- a/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
+++ b/src/System.Runtime.Loader/tests/System.Runtime.Loader.Test.AssemblyNotSupported/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Numerics/Directory.Build.props b/src/System.Runtime.Numerics/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Runtime.Numerics/Directory.Build.props
+++ b/src/System.Runtime.Numerics/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Numerics/ref/Configurations.props b/src/System.Runtime.Numerics/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Numerics/ref/Configurations.props
+++ b/src/System.Runtime.Numerics/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Numerics/src/Configurations.props b/src/System.Runtime.Numerics/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Runtime.Numerics/src/Configurations.props
+++ b/src/System.Runtime.Numerics/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Numerics/src/Resources/Strings.resx b/src/System.Runtime.Numerics/src/Resources/Strings.resx
index a8d6577fec0c..25aac5f9c67d 100644
--- a/src/System.Runtime.Numerics/src/Resources/Strings.resx
+++ b/src/System.Runtime.Numerics/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.Numerics/tests/Configurations.props b/src/System.Runtime.Numerics/tests/Configurations.props
index 093f19aa9028..68ac7b9c023b 100644
--- a/src/System.Runtime.Numerics/tests/Configurations.props
+++ b/src/System.Runtime.Numerics/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Numerics/tests/Performance/Configurations.props b/src/System.Runtime.Numerics/tests/Performance/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Runtime.Numerics/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Numerics/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Formatters/Directory.Build.props b/src/System.Runtime.Serialization.Formatters/Directory.Build.props
index 761e10102c4d..21df61f36c2f 100644
--- a/src/System.Runtime.Serialization.Formatters/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Formatters/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Formatters/ref/Configurations.props b/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Formatters/src/Configurations.props b/src/System.Runtime.Serialization.Formatters/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Runtime.Serialization.Formatters/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Formatters/src/Resources/Strings.resx b/src/System.Runtime.Serialization.Formatters/src/Resources/Strings.resx
index 4783ed048c68..078b0d67e059 100644
--- a/src/System.Runtime.Serialization.Formatters/src/Resources/Strings.resx
+++ b/src/System.Runtime.Serialization.Formatters/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.Serialization.Formatters/tests/Configurations.props b/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
index 1b4aa9f3ef14..1ca7677506d4 100644
--- a/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Formatters/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- Needs netfx configuration per bug (dotnet/corefx #17575) so tests are actively running in desktop -->
     <BuildConfigurations>
diff --git a/src/System.Runtime.Serialization.Json/Directory.Build.props b/src/System.Runtime.Serialization.Json/Directory.Build.props
index c1845f50ce13..9162773bfdc6 100644
--- a/src/System.Runtime.Serialization.Json/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Json/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Json/ref/Configurations.props b/src/System.Runtime.Serialization.Json/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Serialization.Json/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Json/src/Configurations.props b/src/System.Runtime.Serialization.Json/src/Configurations.props
index 296b296ee218..591dde55dde6 100644
--- a/src/System.Runtime.Serialization.Json/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Json/tests/Configurations.props b/src/System.Runtime.Serialization.Json/tests/Configurations.props
index 840f3a0b260b..2260378844bc 100644
--- a/src/System.Runtime.Serialization.Json/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props b/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props b/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
index 840f3a0b260b..2260378844bc 100644
--- a/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
+++ b/src/System.Runtime.Serialization.Json/tests/ReflectionOnly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Primitives/Directory.Build.props b/src/System.Runtime.Serialization.Primitives/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Runtime.Serialization.Primitives/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Primitives/ref/Configurations.props b/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Primitives/src/Configurations.props b/src/System.Runtime.Serialization.Primitives/src/Configurations.props
index 74ab6cde0598..31322005d782 100644
--- a/src/System.Runtime.Serialization.Primitives/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Primitives/src/Resources/Strings.resx b/src/System.Runtime.Serialization.Primitives/src/Resources/Strings.resx
index 3f3cead836f1..43f9e0b26e37 100644
--- a/src/System.Runtime.Serialization.Primitives/src/Resources/Strings.resx
+++ b/src/System.Runtime.Serialization.Primitives/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.Serialization.Primitives/tests/Configurations.props b/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Primitives/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/Directory.Build.props b/src/System.Runtime.Serialization.Xml/Directory.Build.props
index 80ffe16c4c29..0cef3cdffff2 100644
--- a/src/System.Runtime.Serialization.Xml/Directory.Build.props
+++ b/src/System.Runtime.Serialization.Xml/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.Serialization.Xml/ref/Configurations.props b/src/System.Runtime.Serialization.Xml/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Runtime.Serialization.Xml/ref/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime.Serialization.Xml/src/Configurations.props b/src/System.Runtime.Serialization.Xml/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Runtime.Serialization.Xml/src/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
index e49b4847e0e4..5866d421df58 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Canonicalization/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;			
diff --git a/src/System.Runtime.Serialization.Xml/tests/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Configurations.props
index 840f3a0b260b..2260378844bc 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props b/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
index 840f3a0b260b..2260378844bc 100644
--- a/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
+++ b/src/System.Runtime.Serialization.Xml/tests/ReflectionOnly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
index fe20a40aad50..bfa60abb6366 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj b/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
index f9d8afaca649..10b4e354fbff 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/pkg/System.Runtime.WindowsRuntime.UI.Xaml.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
index f630dfb712d1..6a88cfc1ed62 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
index 1e6db861ed83..17a96b153b1a 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Resources/Strings.resx b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Resources/Strings.resx
index a12a5ae00ce3..56adff40d995 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Resources/Strings.resx
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props b/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
index abc16980e0c8..945a2e85a05e 100644
--- a/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime.UI.Xaml/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime.WindowsRuntime/Directory.Build.props b/src/System.Runtime.WindowsRuntime/Directory.Build.props
index ca529be690c6..98e5c636377d 100644
--- a/src/System.Runtime.WindowsRuntime/Directory.Build.props
+++ b/src/System.Runtime.WindowsRuntime/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.14.0</AssemblyVersion>
diff --git a/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj b/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
index ecd79acd6b16..4559a092e762 100644
--- a/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
+++ b/src/System.Runtime.WindowsRuntime/pkg/System.Runtime.WindowsRuntime.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Runtime.WindowsRuntime/ref/Configurations.props b/src/System.Runtime.WindowsRuntime/ref/Configurations.props
index f630dfb712d1..6a88cfc1ed62 100644
--- a/src/System.Runtime.WindowsRuntime/ref/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Runtime.WindowsRuntime/src/Configurations.props b/src/System.Runtime.WindowsRuntime/src/Configurations.props
index c9c9f77a07a5..ccb074954926 100644
--- a/src/System.Runtime.WindowsRuntime/src/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/src/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
diff --git a/src/System.Runtime.WindowsRuntime/src/Resources/Strings.resx b/src/System.Runtime.WindowsRuntime/src/Resources/Strings.resx
index eae22217d40d..719c7b7380e1 100644
--- a/src/System.Runtime.WindowsRuntime/src/Resources/Strings.resx
+++ b/src/System.Runtime.WindowsRuntime/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Runtime.WindowsRuntime/tests/Configurations.props b/src/System.Runtime.WindowsRuntime/tests/Configurations.props
index abc16980e0c8..945a2e85a05e 100644
--- a/src/System.Runtime.WindowsRuntime/tests/Configurations.props
+++ b/src/System.Runtime.WindowsRuntime/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Runtime/Directory.Build.props b/src/System.Runtime/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Runtime/Directory.Build.props
+++ b/src/System.Runtime/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Runtime/ref/Configurations.props b/src/System.Runtime/ref/Configurations.props
index 27b457ccfca8..78fe5293a554 100644
--- a/src/System.Runtime/ref/Configurations.props
+++ b/src/System.Runtime/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime/src/Configurations.props b/src/System.Runtime/src/Configurations.props
index 5f04e4fc0a36..78e091b28e29 100644
--- a/src/System.Runtime/src/Configurations.props
+++ b/src/System.Runtime/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Runtime/tests/Configurations.props b/src/System.Runtime/tests/Configurations.props
index 3f7ac601add1..af7d10ae81d9 100644
--- a/src/System.Runtime/tests/Configurations.props
+++ b/src/System.Runtime/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.Runtime/tests/Performance/Configurations.props b/src/System.Runtime/tests/Performance/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Runtime/tests/Performance/Configurations.props
+++ b/src/System.Runtime/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props b/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props
+++ b/src/System.Runtime/tests/TestCollectibleAssembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime/tests/TestLoadAssembly/Configurations.props b/src/System.Runtime/tests/TestLoadAssembly/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime/tests/TestLoadAssembly/Configurations.props
+++ b/src/System.Runtime/tests/TestLoadAssembly/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime/tests/TestModule/Configurations.props b/src/System.Runtime/tests/TestModule/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Runtime/tests/TestModule/Configurations.props
+++ b/src/System.Runtime/tests/TestModule/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Runtime/tests/TestModule/System.Reflection.TestModule.ilproj b/src/System.Runtime/tests/TestModule/System.Reflection.TestModule.ilproj
index 7ae0cedb4be1..9ddba33c62f4 100644
--- a/src/System.Runtime/tests/TestModule/System.Reflection.TestModule.ilproj
+++ b/src/System.Runtime/tests/TestModule/System.Reflection.TestModule.ilproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project Sdk="Microsoft.NET.Sdk.IL">
+<Project Sdk="Microsoft.NET.Sdk.IL">
   <PropertyGroup>
     <AssemblyVersion>1.0.0.0</AssemblyVersion>
     <ProjectGuid>{3B7489C4-65DB-4E69-BE01-F6234133400C}</ProjectGuid>
diff --git a/src/System.Security.AccessControl/Directory.Build.props b/src/System.Security.AccessControl/Directory.Build.props
index a781d6500860..b4a77348bc81 100644
--- a/src/System.Security.AccessControl/Directory.Build.props
+++ b/src/System.Security.AccessControl/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj b/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj
index ffc07fccc9b0..8d79f4072609 100644
--- a/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj
+++ b/src/System.Security.AccessControl/pkg/System.Security.AccessControl.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.AccessControl.csproj">
diff --git a/src/System.Security.AccessControl/ref/Configurations.props b/src/System.Security.AccessControl/ref/Configurations.props
index 3b97ce9e9265..c06ff01fab76 100644
--- a/src/System.Security.AccessControl/ref/Configurations.props
+++ b/src/System.Security.AccessControl/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.AccessControl/src/Configurations.props b/src/System.Security.AccessControl/src/Configurations.props
index 19263318eb19..4ace388705ab 100644
--- a/src/System.Security.AccessControl/src/Configurations.props
+++ b/src/System.Security.AccessControl/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       net461-Windows_NT;
diff --git a/src/System.Security.AccessControl/src/Resources/Strings.resx b/src/System.Security.AccessControl/src/Resources/Strings.resx
index 8c858679e768..f425668a7404 100644
--- a/src/System.Security.AccessControl/src/Resources/Strings.resx
+++ b/src/System.Security.AccessControl/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.AccessControl/tests/Configurations.props b/src/System.Security.AccessControl/tests/Configurations.props
index f0841d79479c..edd91d331c88 100644
--- a/src/System.Security.AccessControl/tests/Configurations.props
+++ b/src/System.Security.AccessControl/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
         netstandard-Windows_NT;
diff --git a/src/System.Security.Claims/Directory.Build.props b/src/System.Security.Claims/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.Claims/Directory.Build.props
+++ b/src/System.Security.Claims/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Security.Claims/ref/Configurations.props b/src/System.Security.Claims/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Claims/ref/Configurations.props
+++ b/src/System.Security.Claims/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Claims/src/Configurations.props b/src/System.Security.Claims/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Security.Claims/src/Configurations.props
+++ b/src/System.Security.Claims/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Security.Claims/src/Resources/Strings.resx b/src/System.Security.Claims/src/Resources/Strings.resx
index 0afb62732176..cb8aab40e3fd 100644
--- a/src/System.Security.Claims/src/Resources/Strings.resx
+++ b/src/System.Security.Claims/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Claims/tests/Configurations.props b/src/System.Security.Claims/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Security.Claims/tests/Configurations.props
+++ b/src/System.Security.Claims/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Algorithms/Directory.Build.props b/src/System.Security.Cryptography.Algorithms/Directory.Build.props
index b811606aef16..3f43a7a17102 100644
--- a/src/System.Security.Cryptography.Algorithms/Directory.Build.props
+++ b/src/System.Security.Cryptography.Algorithms/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.3.1.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.Algorithms/ref/Configurations.props b/src/System.Security.Cryptography.Algorithms/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Cryptography.Algorithms/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Algorithms/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Algorithms/src/Configurations.props b/src/System.Security.Cryptography.Algorithms/src/Configurations.props
index 3304e32c470c..3e7e3ea95a1d 100644
--- a/src/System.Security.Cryptography.Algorithms/src/Configurations.props
+++ b/src/System.Security.Cryptography.Algorithms/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Algorithms/src/Resources/Strings.resx b/src/System.Security.Cryptography.Algorithms/src/Resources/Strings.resx
index 440126ae294b..de83e618b6c3 100644
--- a/src/System.Security.Cryptography.Algorithms/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Algorithms/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.Algorithms/tests/Configurations.props b/src/System.Security.Cryptography.Algorithms/tests/Configurations.props
index 1c6819ea87b3..4278253296aa 100644
--- a/src/System.Security.Cryptography.Algorithms/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Algorithms/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Cng/Directory.Build.props b/src/System.Security.Cryptography.Cng/Directory.Build.props
index 73d5e234f9ce..b9957adc999b 100644
--- a/src/System.Security.Cryptography.Cng/Directory.Build.props
+++ b/src/System.Security.Cryptography.Cng/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.3.2.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj b/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj
index 2ba1de9f170e..2742a7c2e560 100644
--- a/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj
+++ b/src/System.Security.Cryptography.Cng/pkg/System.Security.Cryptography.Cng.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
diff --git a/src/System.Security.Cryptography.Cng/ref/Configurations.props b/src/System.Security.Cryptography.Cng/ref/Configurations.props
index 1967fa135cc1..b917a74cdaf8 100644
--- a/src/System.Security.Cryptography.Cng/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Cng/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
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diff --git a/src/System.Security.Cryptography.Cng/src/Configurations.props b/src/System.Security.Cryptography.Cng/src/Configurations.props
index d736bc6de950..54f2a9cdd0c2 100644
--- a/src/System.Security.Cryptography.Cng/src/Configurations.props
+++ b/src/System.Security.Cryptography.Cng/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
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diff --git a/src/System.Security.Cryptography.Cng/src/Resources/Strings.resx b/src/System.Security.Cryptography.Cng/src/Resources/Strings.resx
index 372450e63020..f6fc81ed80da 100644
--- a/src/System.Security.Cryptography.Cng/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Cng/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.Cng/tests/Configurations.props b/src/System.Security.Cryptography.Cng/tests/Configurations.props
index 8f145ff56c6a..869153f7b722 100644
--- a/src/System.Security.Cryptography.Cng/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Cng/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Csp/Directory.Build.props b/src/System.Security.Cryptography.Csp/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.Cryptography.Csp/Directory.Build.props
+++ b/src/System.Security.Cryptography.Csp/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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diff --git a/src/System.Security.Cryptography.Csp/ref/Configurations.props b/src/System.Security.Cryptography.Csp/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Cryptography.Csp/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Csp/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Csp/src/Configurations.props b/src/System.Security.Cryptography.Csp/src/Configurations.props
index 201076ca67cd..3c373cd12fa3 100644
--- a/src/System.Security.Cryptography.Csp/src/Configurations.props
+++ b/src/System.Security.Cryptography.Csp/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Csp/src/Resources/Strings.resx b/src/System.Security.Cryptography.Csp/src/Resources/Strings.resx
index 125132c3faa2..b83f45a50b63 100644
--- a/src/System.Security.Cryptography.Csp/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Csp/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Security.Cryptography.Csp/tests/Configurations.props b/src/System.Security.Cryptography.Csp/tests/Configurations.props
index 765a81ccf7b6..9f7fa7ad185b 100644
--- a/src/System.Security.Cryptography.Csp/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Csp/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Security.Cryptography.Encoding/Directory.Build.props b/src/System.Security.Cryptography.Encoding/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.Cryptography.Encoding/Directory.Build.props
+++ b/src/System.Security.Cryptography.Encoding/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Security.Cryptography.Encoding/ref/Configurations.props b/src/System.Security.Cryptography.Encoding/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Cryptography.Encoding/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Encoding/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
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diff --git a/src/System.Security.Cryptography.Encoding/src/Configurations.props b/src/System.Security.Cryptography.Encoding/src/Configurations.props
index 0afd1b0fe384..d90958480798 100644
--- a/src/System.Security.Cryptography.Encoding/src/Configurations.props
+++ b/src/System.Security.Cryptography.Encoding/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Security.Cryptography.Encoding/src/Resources/Strings.resx b/src/System.Security.Cryptography.Encoding/src/Resources/Strings.resx
index baed2a4bbd00..0849bad420f1 100644
--- a/src/System.Security.Cryptography.Encoding/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Encoding/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Security.Cryptography.Encoding/tests/Configurations.props b/src/System.Security.Cryptography.Encoding/tests/Configurations.props
index fc09ee113b7f..2b7db4cef13b 100644
--- a/src/System.Security.Cryptography.Encoding/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Encoding/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Encoding/tests/Resources/Strings.resx b/src/System.Security.Cryptography.Encoding/tests/Resources/Strings.resx
index 0cfa35c536e9..eb6a816f421f 100644
--- a/src/System.Security.Cryptography.Encoding/tests/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Encoding/tests/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
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diff --git a/src/System.Security.Cryptography.OpenSsl/Directory.Build.props b/src/System.Security.Cryptography.OpenSsl/Directory.Build.props
index ff313e503168..7de773a482ac 100644
--- a/src/System.Security.Cryptography.OpenSsl/Directory.Build.props
+++ b/src/System.Security.Cryptography.OpenSsl/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj b/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj
index fa87ce4aeaa8..d81e04387b16 100644
--- a/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj
+++ b/src/System.Security.Cryptography.OpenSsl/pkg/System.Security.Cryptography.OpenSsl.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Cryptography.OpenSsl.csproj">
diff --git a/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props b/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
+++ b/src/System.Security.Cryptography.OpenSsl/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Security.Cryptography.OpenSsl/src/Configurations.props b/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
index a13b368120e5..59df922f46fa 100644
--- a/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
+++ b/src/System.Security.Cryptography.OpenSsl/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.OpenSsl/src/Resources/Strings.resx b/src/System.Security.Cryptography.OpenSsl/src/Resources/Strings.resx
index 429ea8f0c1bc..01bbec35fde5 100644
--- a/src/System.Security.Cryptography.OpenSsl/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.OpenSsl/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props b/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props
index 1319d8c3379d..03ab26ca4adb 100644
--- a/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props
+++ b/src/System.Security.Cryptography.OpenSsl/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Pkcs/Directory.Build.props b/src/System.Security.Cryptography.Pkcs/Directory.Build.props
index 525d00c755d1..a0dc52cd8f47 100644
--- a/src/System.Security.Cryptography.Pkcs/Directory.Build.props
+++ b/src/System.Security.Cryptography.Pkcs/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.1.0.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj b/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj
index 82c5dcf1a553..3c619d1ecc90 100644
--- a/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj
+++ b/src/System.Security.Cryptography.Pkcs/pkg/System.Security.Cryptography.Pkcs.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Cryptography.Pkcs.csproj">
diff --git a/src/System.Security.Cryptography.Pkcs/ref/Configurations.props b/src/System.Security.Cryptography.Pkcs/ref/Configurations.props
index 80d513c9b262..acd9b5e23e8e 100644
--- a/src/System.Security.Cryptography.Pkcs/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Pkcs/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Pkcs/src/Configurations.props b/src/System.Security.Cryptography.Pkcs/src/Configurations.props
index d37504d27204..589f0c7fddc9 100644
--- a/src/System.Security.Cryptography.Pkcs/src/Configurations.props
+++ b/src/System.Security.Cryptography.Pkcs/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Pkcs/src/Resources/Strings.resx b/src/System.Security.Cryptography.Pkcs/src/Resources/Strings.resx
index bfeac027aa98..3e92905772af 100644
--- a/src/System.Security.Cryptography.Pkcs/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Pkcs/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Security.Cryptography.Pkcs/tests/Configurations.props b/src/System.Security.Cryptography.Pkcs/tests/Configurations.props
index ab17932e27b9..eb25881ac2c2 100644
--- a/src/System.Security.Cryptography.Pkcs/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Pkcs/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
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diff --git a/src/System.Security.Cryptography.Primitives/Directory.Build.props b/src/System.Security.Cryptography.Primitives/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.Cryptography.Primitives/Directory.Build.props
+++ b/src/System.Security.Cryptography.Primitives/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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diff --git a/src/System.Security.Cryptography.Primitives/ref/Configurations.props b/src/System.Security.Cryptography.Primitives/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Cryptography.Primitives/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Primitives/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Security.Cryptography.Primitives/src/Configurations.props b/src/System.Security.Cryptography.Primitives/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Security.Cryptography.Primitives/src/Configurations.props
+++ b/src/System.Security.Cryptography.Primitives/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
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diff --git a/src/System.Security.Cryptography.Primitives/src/Resources/Strings.resx b/src/System.Security.Cryptography.Primitives/src/Resources/Strings.resx
index 7c64e07b619b..455ec14a0861 100644
--- a/src/System.Security.Cryptography.Primitives/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Primitives/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.Primitives/tests/Configurations.props b/src/System.Security.Cryptography.Primitives/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Security.Cryptography.Primitives/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Primitives/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props b/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props
index 6644453ed1d6..a1eadd7648d8 100644
--- a/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props
+++ b/src/System.Security.Cryptography.Primitives/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Cryptography.ProtectedData/Directory.Build.props b/src/System.Security.Cryptography.ProtectedData/Directory.Build.props
index 38448e58868c..98004a4badf7 100644
--- a/src/System.Security.Cryptography.ProtectedData/Directory.Build.props
+++ b/src/System.Security.Cryptography.ProtectedData/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj b/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj
index 3453d54d37d8..16a3059d459e 100644
--- a/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj
+++ b/src/System.Security.Cryptography.ProtectedData/pkg/System.Security.Cryptography.ProtectedData.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Cryptography.ProtectedData.csproj">
diff --git a/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props b/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props
index 5d3db5425432..d7038eb46f28 100644
--- a/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props
+++ b/src/System.Security.Cryptography.ProtectedData/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Cryptography.ProtectedData/src/Configurations.props b/src/System.Security.Cryptography.ProtectedData/src/Configurations.props
index 06fa68df5e7f..4de8a53437ec 100644
--- a/src/System.Security.Cryptography.ProtectedData/src/Configurations.props
+++ b/src/System.Security.Cryptography.ProtectedData/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       net461-Windows_NT;
diff --git a/src/System.Security.Cryptography.ProtectedData/src/Resources/Strings.resx b/src/System.Security.Cryptography.ProtectedData/src/Resources/Strings.resx
index 7a1c8d546e4c..1535e3fd61f7 100644
--- a/src/System.Security.Cryptography.ProtectedData/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.ProtectedData/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props b/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props
index b6f983f5d9de..611acec17f5f 100644
--- a/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props
+++ b/src/System.Security.Cryptography.ProtectedData/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Security.Cryptography.X509Certificates/Directory.Build.props b/src/System.Security.Cryptography.X509Certificates/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Security.Cryptography.X509Certificates/Directory.Build.props
+++ b/src/System.Security.Cryptography.X509Certificates/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.X509Certificates/ref/Configurations.props b/src/System.Security.Cryptography.X509Certificates/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Cryptography.X509Certificates/ref/Configurations.props
+++ b/src/System.Security.Cryptography.X509Certificates/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Cryptography.X509Certificates/src/Configurations.props b/src/System.Security.Cryptography.X509Certificates/src/Configurations.props
index 0afd1b0fe384..d90958480798 100644
--- a/src/System.Security.Cryptography.X509Certificates/src/Configurations.props
+++ b/src/System.Security.Cryptography.X509Certificates/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-OSX;
diff --git a/src/System.Security.Cryptography.X509Certificates/src/Resources/Strings.resx b/src/System.Security.Cryptography.X509Certificates/src/Resources/Strings.resx
index 8d9cedeb6b4a..4a1cdfb70367 100644
--- a/src/System.Security.Cryptography.X509Certificates/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.X509Certificates/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props b/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props
index a314bca81003..b098a67f398a 100644
--- a/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props
+++ b/src/System.Security.Cryptography.X509Certificates/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-OSX;
diff --git a/src/System.Security.Cryptography.X509Certificates/tests/Resources/Strings.resx b/src/System.Security.Cryptography.X509Certificates/tests/Resources/Strings.resx
index 9a1f4bc6dd02..f83f60c15ad2 100644
--- a/src/System.Security.Cryptography.X509Certificates/tests/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.X509Certificates/tests/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Cryptography.Xml/Directory.Build.props b/src/System.Security.Cryptography.Xml/Directory.Build.props
index fb0aa67477c5..c63e87ea233c 100644
--- a/src/System.Security.Cryptography.Xml/Directory.Build.props
+++ b/src/System.Security.Cryptography.Xml/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.Security.Cryptography.Xml/pkg/System.Security.Cryptography.Xml.pkgproj b/src/System.Security.Cryptography.Xml/pkg/System.Security.Cryptography.Xml.pkgproj
index 0cd3e337126b..1e0c6cbb0691 100644
--- a/src/System.Security.Cryptography.Xml/pkg/System.Security.Cryptography.Xml.pkgproj
+++ b/src/System.Security.Cryptography.Xml/pkg/System.Security.Cryptography.Xml.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Cryptography.Xml.csproj">
diff --git a/src/System.Security.Cryptography.Xml/ref/Configurations.props b/src/System.Security.Cryptography.Xml/ref/Configurations.props
index 85b5581c03eb..a1df355a4dfa 100644
--- a/src/System.Security.Cryptography.Xml/ref/Configurations.props
+++ b/src/System.Security.Cryptography.Xml/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Cryptography.Xml/src/Configurations.props b/src/System.Security.Cryptography.Xml/src/Configurations.props
index d791a96d76ad..af214b7985bf 100644
--- a/src/System.Security.Cryptography.Xml/src/Configurations.props
+++ b/src/System.Security.Cryptography.Xml/src/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
diff --git a/src/System.Security.Cryptography.Xml/src/Resources/Strings.resx b/src/System.Security.Cryptography.Xml/src/Resources/Strings.resx
index b0b1ef962dd0..f575153ca4f6 100644
--- a/src/System.Security.Cryptography.Xml/src/Resources/Strings.resx
+++ b/src/System.Security.Cryptography.Xml/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Security.Cryptography.Xml/tests/Configurations.props b/src/System.Security.Cryptography.Xml/tests/Configurations.props
index e56eedff2fb8..37db7ab791da 100644
--- a/src/System.Security.Cryptography.Xml/tests/Configurations.props
+++ b/src/System.Security.Cryptography.Xml/tests/Configurations.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
diff --git a/src/System.Security.Permissions/Directory.Build.props b/src/System.Security.Permissions/Directory.Build.props
index fb0aa67477c5..c63e87ea233c 100644
--- a/src/System.Security.Permissions/Directory.Build.props
+++ b/src/System.Security.Permissions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.2.0</AssemblyVersion>
diff --git a/src/System.Security.Permissions/pkg/System.Security.Permissions.pkgproj b/src/System.Security.Permissions/pkg/System.Security.Permissions.pkgproj
index 1cd5f03577a2..6b60cfcb80cb 100644
--- a/src/System.Security.Permissions/pkg/System.Security.Permissions.pkgproj
+++ b/src/System.Security.Permissions/pkg/System.Security.Permissions.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Permissions.csproj">
diff --git a/src/System.Security.Permissions/ref/Configurations.props b/src/System.Security.Permissions/ref/Configurations.props
index 7f71376cd9ba..19357e41e84e 100644
--- a/src/System.Security.Permissions/ref/Configurations.props
+++ b/src/System.Security.Permissions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Permissions/src/Configurations.props b/src/System.Security.Permissions/src/Configurations.props
index 05b812f0f879..a16dd35e40fd 100644
--- a/src/System.Security.Permissions/src/Configurations.props
+++ b/src/System.Security.Permissions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Permissions/src/Resources/Strings.resx b/src/System.Security.Permissions/src/Resources/Strings.resx
index 28da01bfd358..5ce98baf59b4 100644
--- a/src/System.Security.Permissions/src/Resources/Strings.resx
+++ b/src/System.Security.Permissions/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Permissions/tests/Configurations.props b/src/System.Security.Permissions/tests/Configurations.props
index 86bac15cdaa7..9521391d6cbc 100644
--- a/src/System.Security.Permissions/tests/Configurations.props
+++ b/src/System.Security.Permissions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Security.Principal.Windows/Directory.Build.props b/src/System.Security.Principal.Windows/Directory.Build.props
index a781d6500860..b4a77348bc81 100644
--- a/src/System.Security.Principal.Windows/Directory.Build.props
+++ b/src/System.Security.Principal.Windows/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/System.Security.Principal.Windows/pkg/System.Security.Principal.Windows.pkgproj b/src/System.Security.Principal.Windows/pkg/System.Security.Principal.Windows.pkgproj
index fa491089a36e..f64a56989454 100644
--- a/src/System.Security.Principal.Windows/pkg/System.Security.Principal.Windows.pkgproj
+++ b/src/System.Security.Principal.Windows/pkg/System.Security.Principal.Windows.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Security.Principal.Windows.csproj">
diff --git a/src/System.Security.Principal.Windows/ref/Configurations.props b/src/System.Security.Principal.Windows/ref/Configurations.props
index 4b92e1fd40b6..b9d0b2a59eca 100644
--- a/src/System.Security.Principal.Windows/ref/Configurations.props
+++ b/src/System.Security.Principal.Windows/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Principal.Windows/src/Configurations.props b/src/System.Security.Principal.Windows/src/Configurations.props
index 5b6cb500e231..92a271073786 100644
--- a/src/System.Security.Principal.Windows/src/Configurations.props
+++ b/src/System.Security.Principal.Windows/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Security.Principal.Windows/src/Resources/Strings.resx b/src/System.Security.Principal.Windows/src/Resources/Strings.resx
index 110a230dbd78..adbd9d11a0a5 100644
--- a/src/System.Security.Principal.Windows/src/Resources/Strings.resx
+++ b/src/System.Security.Principal.Windows/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Security.Principal.Windows/tests/Configurations.props b/src/System.Security.Principal.Windows/tests/Configurations.props
index b6f983f5d9de..611acec17f5f 100644
--- a/src/System.Security.Principal.Windows/tests/Configurations.props
+++ b/src/System.Security.Principal.Windows/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard-Windows_NT;
diff --git a/src/System.Security.Principal/Directory.Build.props b/src/System.Security.Principal/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.Principal/Directory.Build.props
+++ b/src/System.Security.Principal/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Security.Principal/ref/Configurations.props b/src/System.Security.Principal/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.Principal/ref/Configurations.props
+++ b/src/System.Security.Principal/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.Principal/src/Configurations.props b/src/System.Security.Principal/src/Configurations.props
index 916e6eb02667..5a5ec98e4341 100644
--- a/src/System.Security.Principal/src/Configurations.props
+++ b/src/System.Security.Principal/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Security.SecureString/Directory.Build.props b/src/System.Security.SecureString/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Security.SecureString/Directory.Build.props
+++ b/src/System.Security.SecureString/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Security.SecureString/ref/Configurations.props b/src/System.Security.SecureString/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Security.SecureString/ref/Configurations.props
+++ b/src/System.Security.SecureString/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Security.SecureString/src/Configurations.props b/src/System.Security.SecureString/src/Configurations.props
index 4c5bf3b44410..cdeb74f110c2 100644
--- a/src/System.Security.SecureString/src/Configurations.props
+++ b/src/System.Security.SecureString/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Security.SecureString/tests/Configurations.props b/src/System.Security.SecureString/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Security.SecureString/tests/Configurations.props
+++ b/src/System.Security.SecureString/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ServiceModel.Syndication/Directory.Build.props b/src/System.ServiceModel.Syndication/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.ServiceModel.Syndication/Directory.Build.props
+++ b/src/System.ServiceModel.Syndication/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj b/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
index 12dc2d2f0c8b..0c2963b3a40f 100644
--- a/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
+++ b/src/System.ServiceModel.Syndication/pkg/System.ServiceModel.Syndication.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.ServiceModel.Syndication.csproj">
diff --git a/src/System.ServiceModel.Syndication/ref/Configurations.props b/src/System.ServiceModel.Syndication/ref/Configurations.props
index fdd902d8a470..2ddc576dadc6 100644
--- a/src/System.ServiceModel.Syndication/ref/Configurations.props
+++ b/src/System.ServiceModel.Syndication/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       net461;
diff --git a/src/System.ServiceModel.Syndication/src/Configurations.props b/src/System.ServiceModel.Syndication/src/Configurations.props
index 6536ffd0eb6c..9c43f42313bc 100644
--- a/src/System.ServiceModel.Syndication/src/Configurations.props
+++ b/src/System.ServiceModel.Syndication/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ServiceModel.Syndication/src/Resources/Strings.resx b/src/System.ServiceModel.Syndication/src/Resources/Strings.resx
index 1c4152ee2cbd..883b7337de89 100644
--- a/src/System.ServiceModel.Syndication/src/Resources/Strings.resx
+++ b/src/System.ServiceModel.Syndication/src/Resources/Strings.resx
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
diff --git a/src/System.ServiceModel.Syndication/tests/Configurations.props b/src/System.ServiceModel.Syndication/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.ServiceModel.Syndication/tests/Configurations.props
+++ b/src/System.ServiceModel.Syndication/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomDisjointItems.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomDisjointItems.xml
index 00c432b7306b..3d853325e6f1 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomDisjointItems.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomDisjointItems.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom">
+<feed xmlns="http://www.w3.org/2005/Atom">
   <title type="text">dive into mark</title>
   <subtitle type="html">
     A &lt;em&gt;lot&lt;/em&gt; of effort
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomEntryTest.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomEntryTest.xml
index 281c039ad8a0..9d38be48fdf7 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomEntryTest.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomEntryTest.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<entry xmlns="http://www.w3.org/2005/Atom">
+<entry xmlns="http://www.w3.org/2005/Atom">
   <id>uuid:43481a10-d881-40d1-adf2-99b438c57e21;id=1</id>
   <title type="text">SyndicationFeed released for .net Core</title>
   <updated>2017-10-11T11:25:55Z</updated>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/absolute_rel.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/absolute_rel.xml
index 6e4fb5c2d211..3f2fc2aed2f9 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/absolute_rel.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/absolute_rel.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a "rel" which is an absolute IRI produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/alternate-no-content.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/alternate-no-content.xml
index ebe57bcb98da..709d6ccf5de7 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/alternate-no-content.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/alternate-no-content.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with an atom:link element with a rel attribute value of alternate but no atom:content element
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-entry-only.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-entry-only.xml
index 11a7493a6848..eaeb3faa5fc2 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-entry-only.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-entry-only.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with one entry, which contains an atom:author element only at the entry level
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-and-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-and-entry.xml
index cfc67ea2bf63..bec47f2696aa 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-and-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-and-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with one entry, both of which contains an atom:author element
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-only.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-only.xml
index 3382644539c9..605932dbaae8 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-only.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/author-at-feed-only.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with one entry, which contains an atom:author element only at the feed level
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-no-entries.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-no-entries.xml
index cb9a0b1a5f24..518dc9ad1a40 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-no-entries.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-no-entries.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:entry elements with the same atom:id and same atom:updated values produces a warning.
 Expect:       !MissingElement{parent:feed,element:author}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-one-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-one-entry.xml
index 507b09f237e8..983b293e4344 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-one-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/authorless-with-one-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with one entry, neither of which contains an atom:author element
 Expect:       MissingElement{element:author,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-entry-ext.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-entry-ext.xml
index de4adb8bcd65..6c9ba21e1d4b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-entry-ext.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-entry-ext.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:entry,element:scheme}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed-ext.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed-ext.xml
index ef6dc7066028..cfe964d7107a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed-ext.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed-ext.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:entry,element:scheme}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed.xml
index 3a254fde2445..4e12beb8f3b7 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-feed.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:entry,element:scheme}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-label-escaped-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-label-escaped-html.xml
index 630af3a29ec0..da8e0b1b0800 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-label-escaped-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-label-escaped-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  category with a label that appears to contain escaped HTML produces a warning
 Expect:       ContainsHTML{element:category}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-label.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-label.xml
index a7095101601a..297c7ae028f2 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-label.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-label.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  category without a label produces no error
 Expect:       !MissingAttribute{attr:label,element:category}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-scheme.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-scheme.xml
index fa83f8591930..ae9a7ee0003f 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-scheme.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-no-scheme.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  category without a scheme produces no error
 Expect:       !MissingAttribute{attr:scheme,element:category}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-invalid-iri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-invalid-iri.xml
index 7984809eee62..151207f948c2 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-invalid-iri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-invalid-iri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  category with a scheme attribute that is not a valid IRI produces an error
 Expect:       InvalidUriChar{element:scheme,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-rel-iri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-rel-iri.xml
index bd4c8af1f82f..6a88582973d6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-rel-iri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/category-scheme-rel-iri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  category with a scheme attribute that is not a valid IRI produces an error
 Expect:       InvalidFullLink{element:scheme,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/contains-email.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/contains-email.xml
index e8baf55b0a2d..c53723952338 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/contains-email.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/contains-email.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  name containing an email address produces a warning
 Expect:       ContainsEmail{element:name,parent:author}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-application-xthml.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-application-xthml.xml
index 6c05e5383c5f..39e9a4c3e9cf 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-application-xthml.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-application-xthml.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  usage of application/xhtml+xml to describe an xhtml fragment
 Expect:       HtmlFragment{element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-base64-no-summary.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-base64-no-summary.xml
index d1668e34cd4d..3e05e2947ab5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-base64-no-summary.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-base64-no-summary.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry contains content that is encoded in Base64 but without a summary
 Expect:       MissingSummary{element:entry,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-invalid-base64.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-invalid-base64.xml
index 1c8251455ba0..bce99f372140 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-invalid-base64.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-invalid-base64.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a type of jpeg and a value that is not valid base64 produces an error
 Expect:       NotBase64{element:content,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-valid-base64.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-valid-base64.xml
index b2be061515b2..ac5e5710b5fe 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-valid-base64.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-jpeg-valid-base64.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a type of jpeg and a value that is valid base64 produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-alternate.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-alternate.xml
index 22b306dd3112..fa78cbcaf87f 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-alternate.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-alternate.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with an atom:content element but no atom:link element with a rel attribute value of alternate
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-type-escaped-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-type-escaped-html.xml
index 6aaa6c148877..29a0e5be4948 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-type-escaped-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-no-type-escaped-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with no type attribute and a value containing escaped html produces a warning
 Expect:       ContainsUndeclaredHTML{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-plain-with-children.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-plain-with-children.xml
index aad16e308188..ef241792f233 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-plain-with-children.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-plain-with-children.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a type of plain and children elements produces an error
 Expect:       UndefinedElement{parent:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-summary.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-summary.xml
index d2779b16a08a..74febce71fcf 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-summary.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-summary.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with an atom:content that has a src attribute but with no summary
 Expect:       MissingSummary{element:entry,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type-no-error.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type-no-error.xml
index fdf8dda37e80..004d2cb01da3 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type-no-error.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type-no-error.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and no type attribute produces a warning
 Expect:       !InvalidMIMEType
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type.xml
index c4613d7a22a3..01198304b714 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-no-type.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and no type attribute produces a warning
 Expect:       MissingTypeAttr{element:content,attr:type,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-relative-ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-relative-ref.xml
index e083833efe16..bbccd6bf609b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-relative-ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-relative-ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute that is a relative IRI reference produce no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-html.xml
index 5f8e9fa39d4f..b39dc56161e4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and a type attribute of html produces an error
 Expect:       InvalidValue{element:content,attr:type,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text-html.xml
index 8f7db7ae6be7..5c599b1177c1 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and a type attribute of text/html produces no error
 Expect:       !HtmlFragment{element:content,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text.xml
index 6cf3bedaac4f..91743d0314a9 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-text.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and a type attribute of text produces an error
 Expect:       InvalidValue{element:content,attr:type,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-xhtml.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-xhtml.xml
index 525e3c9959f2..2a12b45a1c32 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-xhtml.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src-type-xhtml.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a src attribute and a type attribute of xhtml produces an error
 Expect:       InvalidValue{element:content,attr:type,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src.xml
index d828eedc62e7..2b14c70a8499 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-src.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Remote content should produce no NotBlank warning
 Expect:       !NotBlank
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-text-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-text-html.xml
index 8a61043bf695..4c8158e22eda 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-text-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-text-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  usage of text/html to describe an html fragment
 Expect:       HtmlFragment{element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-escaped.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-escaped.xml
index a4c659b377c7..3d67c6b4f733 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-escaped.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-escaped.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xhtml content value containing only escaped html produces a warning
 Expect:       NotInline{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-mixed.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-mixed.xml
index edfa7083273e..5807d0d75586 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-mixed.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-mixed.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xhtml content with elements and escaped text
 Expect:       !NotInline{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-no-xhtml-div.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-no-xhtml-div.xml
index 34839e8361f7..5f1b562d06cb 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-no-xhtml-div.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-no-xhtml-div.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a type of xhtml and an immediate child elements other than xhtml:div produces an error
 Expect:       MissingXhtmlDiv{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-notmarkup.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-notmarkup.xml
index 3d2d399756c8..9946527dedad 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-notmarkup.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-notmarkup.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xhtml content value containing only escaped non-html produces no warning
 Expect:       !NotInline{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-text-children.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-text-children.xml
index de1f4f4bfe25..e02611a76057 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-text-children.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/content-xhtml-text-children.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:   content with a "type" of "xhtml" and child text nodes produces an error
 Expect:       MissingXhtmlDiv{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/duplicate-entries.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/duplicate-entries.xml
index 46bb9dbe96bc..afa7541eade4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/duplicate-entries.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/duplicate-entries.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:entry elements with the same atom:id value produces a warning.
 Expect:       DuplicateEntries
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-rss20-style.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-rss20-style.xml
index 5dfaacf1d475..02f4e0bdb6b5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-rss20-style.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-rss20-style.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  RSS 2.0 style email addresses
 Expect:       InvalidAddrSpec{element:email,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-name.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-name.xml
index 9ae68293e3d8..9d337f62beff 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-name.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-name.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  RFC 2822 "name-addr" style email address
 Expect:       InvalidAddrSpec{element:email,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-plus.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-plus.xml
index 2e2fa2be7f86..95c408a29efc 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-plus.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/email-with-plus.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  email with a plus sign
 Expect:       ValidContact{element:email,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-content.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-content.xml
index c5dcf3187d9a..6bf963567a90 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-content.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-content.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  an entry with an empty atom:content element produces a warning
 Expect:       NotBlank{parent:entry,element:content}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-title.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-title.xml
index a4a4b42f0741..cde20117877a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-title.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/empty-title.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  an entry with an empty atom:title produces a warning
 Expect:       NotBlank{parent:entry,element:title}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/escaped_text.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/escaped_text.xml
index 6eba437d28cf..b64c1989004b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/escaped_text.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/escaped_text.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  escaped html marked at text
 Expect:       ContainsUndeclaredHTML{element:summary}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_html_title.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_html_title.xml
index 07e3ce3a1957..9b7c62a47194 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_html_title.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_html_title.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:title with html content
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_text_title.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_text_title.xml
index e36ee87a77af..64cefba51ce9 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_text_title.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_text_title.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:title with text content
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary1.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary1.xml
index 96843a9a386f..dfe31a8ffeaf 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary1.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:summary with xhtml content
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary2.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary2.xml
index aed3b201f382..a49300ecfa4b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary2.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary2.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:summary with xhtml content
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary3.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary3.xml
index 7a818f90f014..642f32345406 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary3.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/example_xhtml_summary3.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:summary with xhtml content
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extension-unknown-noerror.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extension-unknown-noerror.xml
index 2a594bd0730a..b43d0f331db8 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extension-unknown-noerror.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extension-unknown-noerror.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Unknown extension elements in feed and entry should not affect validity
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-noerror.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-noerror.xml
index f9f90d983c70..98950d3eb9da 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-noerror.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-noerror.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
   Description:  No errors should be produced by the extensive feed
   Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-nowarn.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-nowarn.xml
index 012703232f3b..3f245642211d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-nowarn.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/extensive-nowarn.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
   Description:  No errors should be produced by the extensive feed
   Expect:       !Warning
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-escaped-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-escaped-html.xml
index 1aff7e9d1219..deaf94ec08db 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-escaped-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-escaped-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  generator with text that appears to contain escaped HTML produces a warning
 Expect:       ContainsHTML{element:generator,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-no-text.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-no-text.xml
index 3c7a8186db35..ece3f7f04b13 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-no-text.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator-no-text.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  generator without text produces a warning
 Expect:       NotBlank{element:generator,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator_relative_ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator_relative_ref.xml
index 7fb3bdaa50e0..6c7d033b256e 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator_relative_ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/generator_relative_ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  icon that is a relative IRI reference produce no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_invalid_uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_invalid_uri.xml
index 5d2b50fdd4e2..7be647210d15 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_invalid_uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_invalid_uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  icon with content that is not a valid IRI reference produces an error
 Expect:       InvalidLink{element:icon,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_relative_ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_relative_ref.xml
index 505e886b6488..b643654e4887 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_relative_ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/icon_relative_ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  icon that is a relative IRI reference produce no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-dot-segments.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-dot-segments.xml
index 9110900c264c..c03ced626ffa 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-dot-segments.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-dot-segments.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with dot-segments in path produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-fragment-id.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-fragment-id.xml
index d50b6ce020bb..eb799266fa5d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-fragment-id.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-fragment-id.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with an empty fragment identifier produces no warning
 Expect:       !NonCanonicalURI
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-path.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-path.xml
index 495591fb4abb..59add411c0a7 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-path.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-path.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with an empty path for schemes like http produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-query.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-query.xml
index 0aaaa042ba76..718906668350 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-query.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-empty-query.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with an empty query produces no warning
 Expect:       !NonCanonicalURI
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-authority.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-authority.xml
index 71832dbbc222..1425220ae864 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-authority.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-authority.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with an explicit authority equivalent to the default produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-default-port.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-default-port.xml
index 9ecf986f2fc1..91a1f2933eae 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-default-port.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-explicit-default-port.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id whith an explicitly specified default port produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-host-uppercase.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-host-uppercase.xml
index 883326cd3ca4..d7d4edd6915c 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-host-uppercase.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-host-uppercase.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with a host in uppercase characters produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-noniana.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-noniana.xml
index 041c9038276e..3a510bd0e091 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-noniana.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-noniana.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id which uses a non-IANA registered scheme produces a warning
 Expect:       SchemeNotIANARegistered{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-not-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-not-uri.xml
index 590dcec456d6..761f0d620f5a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-not-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-not-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id which is not an IRI produces an error
 Expect:       InvalidLink{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded-lower.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded-lower.xml
index 4069fc301ece..aa9bffef0ae6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded-lower.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded-lower.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with percent-encoding using lowercase characters produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded.xml
index fcbcd8094a27..26137c9c72ec 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-percent-encoded.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with percent-encoding unnecessarily produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-relative-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-relative-uri.xml
index 1f293dcb6fca..9236ac6c974d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-relative-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-relative-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id which is a relative IRI produces an error
 Expect:       InvalidFullLink{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-uppercase-scheme.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-uppercase-scheme.xml
index 5e80c8d50004..03e5ff0aae76 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-uppercase-scheme.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-uppercase-scheme.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  id with a scheme in uppercase characters produces a warning
 Expect:       NonCanonicalURI{element:id,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-valid-tag-uris.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-valid-tag-uris.xml
index 994708349dc6..6fe8144ddce1 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-valid-tag-uris.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/id-valid-tag-uris.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Valid Tag URIs, according to RFC 4151, should not produce errors
 Expect:       !InvalidTAG
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-attr-order.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-attr-order.xml
index 48b7120a1538..04c3e8a3220a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-attr-order.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-attr-order.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  The order of attributes within a start-tag is not significant.
 Expect:       DuplicateAtomLink{parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-char-ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-char-ref.xml
index 78ad80cf00b9..5f1e8ff333a9 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-char-ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-char-ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whether characters are represented by character references or not is not significant.
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-element-whitespace.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-element-whitespace.xml
index 9a05e46ccffe..2721c372cbca 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-element-whitespace.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-element-whitespace.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  White space within start-tags (other than significant white space in attribute values) and end-tags is not significant.
 Expect:       DuplicateAtomLink{parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty1.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty1.xml
index f552c6a1c5ee..7754ea534bb6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty1.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty1.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Empty title element
 Expect:       NotBlank{element:title,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty2.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty2.xml
index a5687bf32620..1e7f3028b9f6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty2.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-empty2.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Empty title element
 Expect:       NotBlank{element:title,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-quote-single.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-quote-single.xml
index 8b9044ace5e0..301915056ad5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-quote-single.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/infoset-quote-single.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  The kind of quotation marks (single or double) used to quote attribute values is not significant.
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-email.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-email.xml
index 3c658560dd3a..6b9b0fa6a884 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-email.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-email.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  contributor with an atom:email that is not valid
 Expect:       InvalidAddrSpec{element:email,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-uri.xml
index 4d0fcc699bf9..fe1b6d1d81b4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  contributor with an atom:uri that is not a valid IRI reference
 Expect:       InvalidLink{element:uri,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-base.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-base.xml
index e89d653c3223..7431f756a644 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-base.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-base.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xml base with an invalid iri
 Expect:       InvalidUriChar{element:xml:base}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-lang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-lang.xml
index 70c065b5d1c4..82e8338410bc 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-lang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/invalid-xml-lang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  invalid xml:lang an error
 Expect:       InvalidLanguage{element:xml:lang}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/license-noerror.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/license-noerror.xml
index 9a0a1968dc2b..30ea5eb0231b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/license-noerror.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/license-noerror.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  creativeCommons:license element
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-extensions.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-extensions.xml
index 2e87e38ad710..a025258f8cf6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-extensions.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-extensions.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Foreign markup as a child of an atom:link element
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-full-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-full-uri.xml
index 16c4b6db4eff..ba43009b33d6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-full-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-full-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with an atom:link with a rel attribute value specifying an unrecognized fully qualified IRI
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-href-relative.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-href-relative.xml
index 1405bbbe3ed6..c2e7c6eeb229 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-href-relative.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-href-relative.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a href link-href-invalid.xml link-no-href.xml
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-hreflang-invalid-language.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-hreflang-invalid-language.xml
index a84b6cb5373a..7656fb1b5080 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-hreflang-invalid-language.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-hreflang-invalid-language.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a hreflang attribute that is not a language tag produces an error
 Expect:       InvalidLanguage{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-full.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-full.xml
index c3bfc5a4fc9f..8340ca8f2575 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-full.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-full.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with an atom:link with a rel attribute value specifying an unrecognized fully qualified IRI
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-iana.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-iana.xml
index f7f9ea1f2331..bfbda5f26371 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-iana.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-iana.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a rel with iana org
 Expect:       !MissingSelf
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-isegment-nz-nc.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-isegment-nz-nc.xml
index 7ef2c9f41ba3..0b931e69b1ec 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-isegment-nz-nc.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-isegment-nz-nc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a rel which matches isegment-nz-nc produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-relative.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-relative.xml
index 1b9614c028e7..39a166afa6c5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-relative.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-rel-relative.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a rel which is a relative IRI but not a isegment-nz-nc produces an error
 Expect:       UnregisteredAtomLinkRel{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-different-types.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-different-types.xml
index 10029ca8bd58..7d1e9a3d618e 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-different-types.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-different-types.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with two atom:link elements with a rel attribute value of alternate that has the differing types
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-different-hreflang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-different-hreflang.xml
index 9743a8e3b079..003f2e567732 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-different-hreflang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-different-hreflang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with two atom:link elements with a rel attribute value of alternate that has the same type but differing hreflang attribute values
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-hreflang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-hreflang.xml
index f3885ec9b20d..6ebf57b410bc 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-hreflang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-hreflang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with two atom:link elements with a rel attribute value of alternate that has the same type and hreflang attribute values
 Expect:       DuplicateAtomLink{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-no-hreflang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-no-hreflang.xml
index c7a30d863983..3a7dd807fb71 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-no-hreflang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-same-rel-type-no-hreflang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with two atom:link elements with a rel attribute value of alternate that has the same type and no hreflang attribute values
 Expect:       DuplicateAtomLink{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-badchars.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-badchars.xml
index d029a61e5d68..69204d2b8f89 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-badchars.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-badchars.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a title attribute which appears to contain HTML produces a warning  
 Expect:       BadCharacters{element:title,parent:link}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-html.xml
index 53e9f2342a88..81efe16c8836 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-title-with-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a title attribute which appears to contain HTML produces a warning  
 Expect:       ContainsHTML{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-invalid-mime.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-invalid-mime.xml
index dfdbab0be1f2..923b10b5d9c3 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-invalid-mime.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-invalid-mime.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a type attribute which does not match the syntax of a MIME media type produces an error
 Expect:       InvalidMIMEType{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-parameters.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-parameters.xml
index a0a0e606dd59..813028bfe9b6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-parameters.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/link-type-parameters.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link type with parameters produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/logo_relative_ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/logo_relative_ref.xml
index 47549cbab993..d4707d9edee3 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/logo_relative_ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/logo_relative_ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  logo that is a relative IRI reference produce no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-id-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-id-source.xml
index 2f8a4fe17713..7a6bca5a7b05 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-id-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-id-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with zero atom:id elements produces a warning
 Expect:       MissingSourceElement{element:id,parent:source} 
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-self.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-self.xml
index afe7d4abe6c1..ef1cd09cb011 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-self.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-self.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed without an atom:link element with a rel attribute value of self produces a warning
 Expect:       MissingSelf{element:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-title-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-title-source.xml
index b9f25b13be77..0dfc9f5e3929 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-title-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-title-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with zero atom:title elements produces a warning
 Expect:       MissingSourceElement{element:title,parent:source}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-updated-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-updated-source.xml
index d51740811197..f0c05838ce06 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-updated-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing-updated-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  source with zero atom:updated elements produces a warning
 Expect:       MissingSourceElement{element:updated,parent:source}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing_xhtml_ns.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing_xhtml_ns.xml
index 244e898ecca0..10e0804386f0 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing_xhtml_ns.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/missing_xhtml_ns.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Example atom:summary with xhtml content
 Expect:       MissingNamespace{element:b}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing-source.xml
index 0c2a37f8cd23..fb4cc67aa81d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two one atom:link elements with a rel attribute value of "alternate", but with different type and hreflang attribute values produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing.xml
index a23a76797b18..05b038873e73 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-differing.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two one atom:link elements with a rel attribute value of alternate, but with different type and hreflang attribute value
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching-source.xml
index 0f4c0a88df4b..59fdcdb2d0b9 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two atom:link elements with a rel attribute value of "alternate" with the same type and hreflang attribute value produces an error
 Expect:       DuplicateAtomLink{parent:source}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching.xml
index a8628cdead7a..5031e9b2c314 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-alternates-matching.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:link elements with a rel attribute value of alternate and with the same type and hreflang attribute value
 Expect:       DuplicateAtomLink{parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors-source.xml
index dc2acc849701..6da6ca2ee290 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two atom:author elements produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors.xml
index 74a49abfbc53..9ef09acb39a7 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-authors.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:author elements
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-entry.xml
index 4765c92eeb2a..262acd5b0b31 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with multiple atom:category elements
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-source.xml
index e4a289db4b69..9605d214d9fc 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two atom:category elements produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories.xml
index 3c65c44886c5..2a9a5ba78e83 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-categories.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:category elements
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-entry.xml
index 449e9cf746b8..4c67ce8a28ce 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with multiple atom:contributor elements
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-source.xml
index 28cf9c4bade9..396e8be15b25 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two atom:contributor elements produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors.xml
index 4c3fed8e6e40..63acaf2d0822 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-contributors.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:contributor elements
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons-source.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons-source.xml
index dc3f9f636810..15774bb8796d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons-source.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons-source.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a source with two atom:icon elements produces an error
 Expect:       DuplicateElement{element:icon,parent:source}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons.xml
index 9af1cb572884..bb17c5110bd1 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-icons.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:icon elements
 Expect:       DuplicateElement{element:icon,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-related-matching.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-related-matching.xml
index fb35f2027584..dd2ece1df955 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-related-matching.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/multiple-related-matching.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with two atom:link elements with a rel attribute value of related and with the same type and hreflang attribute value
 Expect:       !DuplicateAtomLink{parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-alternate.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-alternate.xml
index ef6432182261..93d98c497f76 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-alternate.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-alternate.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with neither an atom:link element with a rel attribute value of alternate nor an atom:content element
 Expect:       MissingContentOrAlternate{element:entry,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-summary.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-summary.xml
index d5023ec5d30c..af1b2542652c 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-summary.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-content-or-summary.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  an entry with no atom:content or atom:summary produces a warning
 Expect:       MissingTextualContent{element:entry,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-name.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-name.xml
index 3b640d152e76..547a3b4baff0 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-name.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/no-name.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  contributor without an atom:name produces an error
 Expect:       MissingElement{element:name,parent:contributor}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/prefixed-namespace.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/prefixed-namespace.xml
index 242e385c4445..861d9bf6b97d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/prefixed-namespace.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/prefixed-namespace.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Mising Namespace on feed element
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rdf-extensions.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rdf-extensions.xml
index 796ac6373db8..d25b52c5ebbc 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rdf-extensions.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rdf-extensions.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  RDF extensions to Atom
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rel-colon.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rel-colon.xml
index 86c213bdc93d..2de2d1eb7c18 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rel-colon.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rel-colon.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  ValidXMLBase
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/related-same-rel-type-hreflang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/related-same-rel-type-hreflang.xml
index 865c77e63898..da05253b3f04 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/related-same-rel-type-hreflang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/related-same-rel-type-hreflang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with two atom:link elements with a rel attribute value of related that has the same type and hreflang attribute values
 Expect:       !DuplicateAtomLink{element:link,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/relative-ref.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/relative-ref.xml
index 7e2a97320142..8aefb60f0bc4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/relative-ref.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/relative-ref.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  contributor with an atom:uri that is a relative IRI reference
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-text-with-escaped-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-text-with-escaped-html.xml
index 07a81cb019d5..328e3a79417b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-text-with-escaped-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-text-with-escaped-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:   rights with a type of text but appears to include escaped html produces a warning
 Expect:       ContainsUndeclaredHTML{element:rights,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-xhtml-no-xmldiv.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-xhtml-no-xmldiv.xml
index 3ec7421c777a..e5ebf544a8db 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-xhtml-no-xmldiv.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/rights-xhtml-no-xmldiv.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Rights with a type of xhtml needs to include an xhtml:div
 Expect:       MissingXhtmlDiv{element:rights,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/self-vs-alternate.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/self-vs-alternate.xml
index fd729f61652e..f6264d187b05 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/self-vs-alternate.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/self-vs-alternate.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Self-rel referencing a non-Atom representation
 Expect:       SelfNotAtom
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/subtitle-blank.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/subtitle-blank.xml
index 68c36835152d..e803229901bb 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/subtitle-blank.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/subtitle-blank.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a subtitle that is blank produces a warning
 Expect:       NotBlank{element:subtitle,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-base64.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-base64.xml
index f673ea35c064..7193411eb4ee 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-base64.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-base64.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry contains content that is encoded in Base64 with a summary
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-src.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-src.xml
index dfee56a8526f..1789b4d8e053 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-src.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/summary-content-src.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  entry with an atom:summary and an atom:content that has a src attribute
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/title-blank.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/title-blank.xml
index d2860515aa7e..fed11c083a6f 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/title-blank.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/title-blank.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a subtitle that is blank produces a warning
 Expect:       NotBlank{element:title,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-about-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-about-entry.xml
index 0feb736f7121..47489658cdff 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-about-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-about-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Valid trackback:about elements should be permitted on entries
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-entry.xml
index 989a0247c5c2..01da7acbd9b4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Valid trackback:ping elements should be permitted on entries
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-outside-entry.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-outside-entry.xml
index e1b5b8ba2b7d..f25f8a4967ed 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-outside-entry.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/trackback-ping-outside-entry.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  trackback:ping is only defined for feed entries
 Expect:       UndefinedElement{parent:feed,element:trackback:ping}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-html.xml
index 380c78907d1f..d96bc47c53a0 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with type of html produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-multipart-alternative.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-multipart-alternative.xml
index 69fd026e350e..68ba594e7339 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-multipart-alternative.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-multipart-alternative.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a valid composite mime type produces an error
 Expect:       InvalidMIMEType{element:content,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text-html.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text-html.xml
index d9af21d7589d..b5dc9bb25105 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text-html.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text-html.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with a valid non-composite mime type produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text.xml
index ef1fc799967f..8fbc5623be14 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-text.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with type of text produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xhtml.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xhtml.xml
index 559cfffa6697..4ef880da35d0 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xhtml.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xhtml.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with type of xhtml produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xml.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xml.xml
index ac685c42e055..f055da0ade04 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xml.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/type-xml.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  content with type of xml produces an error
 Expect:       InvalidMIMEType{element:content,parent:entry}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary.xml
index 8cddf8303d7b..0d90e961a310 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Unknown extension elements without a namespace get a warning
 Expect:       UndeterminableVocabulary{element:simple-value}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary2.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary2.xml
index b73e7107d055..3334543f3b2b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary2.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary2.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Unknown extension elements without a namespace get a warning
 Expect:       UndeterminableVocabulary{element:simple-value}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary3.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary3.xml
index f3c2921937c3..cad6584834ff 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary3.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/undeterminable-vocabulary3.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Extension elements without a namespace in unknown namespace produce no warning
 Expect:       !UndeterminableVocabulary
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/unregistered-rel.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/unregistered-rel.xml
index 26d7a3d04928..11ff58394108 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/unregistered-rel.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/unregistered-rel.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  link with a "rel" which matches isegment-nz-nc but is not in the IANA registry produces an error
 Expect:       UnregisteredAtomLinkRel{value:service.post,element:link,parent:feed}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/updated-example3.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/updated-example3.xml
index 8a9b3da2d6ae..6c1207389c14 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/updated-example3.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/updated-example3.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Updated example from the spec
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/valid-xml-base-iri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/valid-xml-base-iri.xml
index 942a4f97b1b3..4536b8817d8b 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/valid-xml-base-iri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/valid-xml-base-iri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xml base with an valid iri
 Expect:       !InvalidIRI{element:xml:base}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-author-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-author-uri.xml
index 6b48c6f44be5..a4eaf2a70a79 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-author-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-author-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnexpectedWhitespace{parent:author,element:uri}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-category-scheme.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-category-scheme.xml
index 3112e3174654..3f94caf2a2b0 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-category-scheme.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-category-scheme.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:entry,element:scheme}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-content-src.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-content-src.xml
index bd03af8848a0..8238cc5e0d1a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-content-src.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-content-src.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:entry,element:content,attr:src}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-id.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-id.xml
index cbcda6160e50..ee4789f14841 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-id.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-id.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnexpectedWhitespace{parent:entry,element:id}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-published.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-published.xml
index efb613d72402..f690457ddda4 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-published.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-published.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in dates
 Expect:       UnexpectedWhitespace{parent:entry,element:published}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-updated.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-updated.xml
index f11a8565e032..6d696048a9c5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-updated.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-entry-updated.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in dates
 Expect:       UnexpectedWhitespace{parent:entry,element:updated}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-icon.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-icon.xml
index 607153f9301d..a2d7cce7d810 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-icon.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-icon.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnexpectedWhitespace{parent:feed,element:icon}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-id.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-id.xml
index c6b8189d5c24..d55a853cdddb 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-id.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-id.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnexpectedWhitespace{parent:feed,element:id}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-logo.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-logo.xml
index 755ce9992d25..6f6438e0194c 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-logo.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-logo.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnexpectedWhitespace{parent:feed,element:logo}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-updated.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-updated.xml
index 6f2f122c1959..eea7c0abb7aa 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-updated.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-feed-updated.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in dates
 Expect:       UnexpectedWhitespace{parent:feed,element:updated}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-generator-uri.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-generator-uri.xml
index 8bf0d4b4a18a..b71e41bc8842 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-generator-uri.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-generator-uri.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidUriChar{parent:feed,element:generator,attr:uri}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-href.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-href.xml
index 7e040ba37e83..5a674d192d90 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-href.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-href.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       InvalidLink{parent:feed,element:link}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-rel.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-rel.xml
index 832b93de9c60..a0e3b6ae2c2f 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-rel.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/ws-link-rel.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Whitespace is not permitted in uris
 Expect:       UnregisteredAtomLinkRel{parent:feed,element:link}
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xhtml-extensions.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xhtml-extensions.xml
index aa3e66949837..0a0fba93e60a 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xhtml-extensions.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xhtml-extensions.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  XHTML extensions to Atom
 Expect:       MisplacedXHTMLContent
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-ambiguous.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-ambiguous.xml
index a876db673cb4..f6ea0bea11d5 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-ambiguous.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-ambiguous.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Document XML base != Element XML base == href
 Expect:       SameDocumentReference
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-elem-ne-doc.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-elem-ne-doc.xml
index 7b8e9683968e..d7aedd91f2b6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-elem-ne-doc.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base-elem-ne-doc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  Document XML base != Element XML base != href
 Expect:       !SameDocumentReference
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base.xml
index 186b2ec0982b..7f7f2b8b2564 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-base.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  ValidXMLBase
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang-blank.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang-blank.xml
index 5b65cf2153f3..f7aa7765551d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang-blank.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang-blank.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  blank xml:lang produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang.xml
index 91433d981aac..2c7ad0cffa79 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/xml-lang.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  xml:lang produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/zero-entries.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/zero-entries.xml
index 40bd3c6fc9a2..7556a95ac951 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/zero-entries.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/AtomFeeds/zero-entries.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  a feed with zero entries produces no error
 Expect:       !Error
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/RssDisjointItems.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/RssDisjointItems.xml
index ae78e43fa40e..cda53f8db805 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/RssDisjointItems.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/RssDisjointItems.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
+<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
   <channel xml:base="http://mypage.com/">
     <title>Contoso News</title>
     <link>http://www.Contoso.com/news</link>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/RssFeedWithCustomImageName.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/RssFeedWithCustomImageName.xml
index 4b5b96f529ed..7608b89e454d 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/RssFeedWithCustomImageName.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/RssFeedWithCustomImageName.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
+<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
   <channel xml:base="http://mypage.com/">
     <title>Contoso News</title>
     <link>http://www.Contoso.com/news</link>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeed.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeed.xml
index 824f2ba47bee..89b00b6c99e8 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeed.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeed.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<feed xml:base="http://mypage.com/" xmlns="http://www.w3.org/2005/Atom">
+<feed xml:base="http://mypage.com/" xmlns="http://www.w3.org/2005/Atom">
   <title type="text">Contoso News</title>
   <subtitle type="text">&lt;div&gt;Most recent news from Contoso&lt;/div&gt;</subtitle>
   <id>123FeedID</id>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeedCustomParser.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeedCustomParser.xml
index e6237940dce4..d5792c6a5497 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeedCustomParser.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleAtomFeedCustomParser.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<feed xml:base="http://mypage.com/" xmlns="http://www.w3.org/2005/Atom">
+<feed xml:base="http://mypage.com/" xmlns="http://www.w3.org/2005/Atom">
   <title type="text">FeedTitle</title>
   <subtitle type="text">FeedSubtitle</subtitle>
   <id>FeedID</id>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleRssFeed.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleRssFeed.xml
index 1b69a3fd7b47..18357123c567 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleRssFeed.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/SimpleRssFeed.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
+<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
   <channel xml:base="http://mypage.com/">
     <title>Contoso News</title>
     <link>http://www.Contoso.com/news</link>
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/atom_spec_example.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/atom_spec_example.xml
index 4efadc6568cf..efdc68b3a571 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/atom_spec_example.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/atom_spec_example.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<feed xmlns="http://www.w3.org/2005/Atom">
+<feed xmlns="http://www.w3.org/2005/Atom">
   <title type="text">dive into mark</title>
   <icon>https://avatars0.githubusercontent.com/u/9141961</icon>
   <subtitle type="html">
diff --git a/src/System.ServiceModel.Syndication/tests/TestFeeds/brief-entry-noerror.xml b/src/System.ServiceModel.Syndication/tests/TestFeeds/brief-entry-noerror.xml
index 954af164b175..619e435005c6 100644
--- a/src/System.ServiceModel.Syndication/tests/TestFeeds/brief-entry-noerror.xml
+++ b/src/System.ServiceModel.Syndication/tests/TestFeeds/brief-entry-noerror.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 Description:  No errors should be produced by a minimal entry
 Expect:       !Error
diff --git a/src/System.ServiceProcess.ServiceController/Directory.Build.props b/src/System.ServiceProcess.ServiceController/Directory.Build.props
index 0802fbf45dda..036c27c05dbb 100644
--- a/src/System.ServiceProcess.ServiceController/Directory.Build.props
+++ b/src/System.ServiceProcess.ServiceController/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.2.0</AssemblyVersion>
diff --git a/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj b/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj
index 4cc87307164f..200a6bdca846 100644
--- a/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj
+++ b/src/System.ServiceProcess.ServiceController/pkg/System.ServiceProcess.ServiceController.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.ServiceProcess.ServiceController.csproj">
diff --git a/src/System.ServiceProcess.ServiceController/ref/Configurations.props b/src/System.ServiceProcess.ServiceController/ref/Configurations.props
index 2a7570a4d9b5..9393ec7ff725 100644
--- a/src/System.ServiceProcess.ServiceController/ref/Configurations.props
+++ b/src/System.ServiceProcess.ServiceController/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.ServiceProcess.ServiceController/src/Configurations.props b/src/System.ServiceProcess.ServiceController/src/Configurations.props
index 7a4bac431357..5368156f005b 100644
--- a/src/System.ServiceProcess.ServiceController/src/Configurations.props
+++ b/src/System.ServiceProcess.ServiceController/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.ServiceProcess.ServiceController/src/Resources/Strings.resx b/src/System.ServiceProcess.ServiceController/src/Resources/Strings.resx
index b8705287e84b..ac4efff21f81 100644
--- a/src/System.ServiceProcess.ServiceController/src/Resources/Strings.resx
+++ b/src/System.ServiceProcess.ServiceController/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.ServiceProcess.ServiceController/tests/Configurations.props b/src/System.ServiceProcess.ServiceController/tests/Configurations.props
index 1af4d0816e72..8bfb431d9ba6 100644
--- a/src/System.ServiceProcess.ServiceController/tests/Configurations.props
+++ b/src/System.ServiceProcess.ServiceController/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Windows_NT;
diff --git a/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props b/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
index 0bc2a7e887e2..2e0339e07963 100644
--- a/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
+++ b/src/System.ServiceProcess.ServiceController/tests/System.ServiceProcess.ServiceController.TestService/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Encoding.CodePages/Directory.Build.props b/src/System.Text.Encoding.CodePages/Directory.Build.props
index 4844c05a1df5..4d02dd36012d 100644
--- a/src/System.Text.Encoding.CodePages/Directory.Build.props
+++ b/src/System.Text.Encoding.CodePages/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.2.0</AssemblyVersion>
diff --git a/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj b/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
index 76829a27cd24..d44cbfca1f3d 100644
--- a/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
+++ b/src/System.Text.Encoding.CodePages/pkg/System.Text.Encoding.CodePages.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Text.Encoding.CodePages.csproj">
diff --git a/src/System.Text.Encoding.CodePages/ref/Configurations.props b/src/System.Text.Encoding.CodePages/ref/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.Encoding.CodePages/ref/Configurations.props
+++ b/src/System.Text.Encoding.CodePages/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Text.Encoding.CodePages/src/Configurations.props b/src/System.Text.Encoding.CodePages/src/Configurations.props
index 3870f7fe721f..1eba17f67593 100644
--- a/src/System.Text.Encoding.CodePages/src/Configurations.props
+++ b/src/System.Text.Encoding.CodePages/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Text.Encoding.CodePages/src/Resources/Strings.resx b/src/System.Text.Encoding.CodePages/src/Resources/Strings.resx
index aab7f36828f9..8b4da5e48800 100644
--- a/src/System.Text.Encoding.CodePages/src/Resources/Strings.resx
+++ b/src/System.Text.Encoding.CodePages/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Text.Encoding.CodePages/tests/Configurations.props b/src/System.Text.Encoding.CodePages/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.Encoding.CodePages/tests/Configurations.props
+++ b/src/System.Text.Encoding.CodePages/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Text.Encoding.Extensions/Directory.Build.props b/src/System.Text.Encoding.Extensions/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Text.Encoding.Extensions/Directory.Build.props
+++ b/src/System.Text.Encoding.Extensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Text.Encoding.Extensions/ref/Configurations.props b/src/System.Text.Encoding.Extensions/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Text.Encoding.Extensions/ref/Configurations.props
+++ b/src/System.Text.Encoding.Extensions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Encoding.Extensions/src/Configurations.props b/src/System.Text.Encoding.Extensions/src/Configurations.props
index eff5e83b15ea..3d283d470086 100644
--- a/src/System.Text.Encoding.Extensions/src/Configurations.props
+++ b/src/System.Text.Encoding.Extensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Text.Encoding.Extensions/tests/Configurations.props b/src/System.Text.Encoding.Extensions/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.Encoding.Extensions/tests/Configurations.props
+++ b/src/System.Text.Encoding.Extensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Text.Encoding/Directory.Build.props b/src/System.Text.Encoding/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Text.Encoding/Directory.Build.props
+++ b/src/System.Text.Encoding/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Text.Encoding/ref/Configurations.props b/src/System.Text.Encoding/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Text.Encoding/ref/Configurations.props
+++ b/src/System.Text.Encoding/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Encoding/src/Configurations.props b/src/System.Text.Encoding/src/Configurations.props
index c4b354d18fcd..06e87b8a189c 100644
--- a/src/System.Text.Encoding/src/Configurations.props
+++ b/src/System.Text.Encoding/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uapaot-Windows_NT;
diff --git a/src/System.Text.Encoding/tests/Configurations.props b/src/System.Text.Encoding/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Text.Encoding/tests/Configurations.props
+++ b/src/System.Text.Encoding/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Encoding/tests/Performance/Configurations.props b/src/System.Text.Encoding/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.Encoding/tests/Performance/Configurations.props
+++ b/src/System.Text.Encoding/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Text.Encodings.Web/Directory.Build.props b/src/System.Text.Encodings.Web/Directory.Build.props
index b51c775945e2..4e60571e9e2a 100644
--- a/src/System.Text.Encodings.Web/Directory.Build.props
+++ b/src/System.Text.Encodings.Web/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj b/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
index 932ad138d2ee..54b7155b6264 100644
--- a/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
+++ b/src/System.Text.Encodings.Web/pkg/System.Text.Encodings.Web.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Text.Encodings.Web.csproj">
diff --git a/src/System.Text.Encodings.Web/src/Configurations.props b/src/System.Text.Encodings.Web/src/Configurations.props
index 975d55ecff8d..2882a0e4c891 100644
--- a/src/System.Text.Encodings.Web/src/Configurations.props
+++ b/src/System.Text.Encodings.Web/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard1.0;
diff --git a/src/System.Text.Encodings.Web/tests/Configurations.props b/src/System.Text.Encodings.Web/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.Encodings.Web/tests/Configurations.props
+++ b/src/System.Text.Encodings.Web/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Text.Json/Directory.Build.props b/src/System.Text.Json/Directory.Build.props
index 2adad372132c..b07417c839b1 100644
--- a/src/System.Text.Json/Directory.Build.props
+++ b/src/System.Text.Json/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
diff --git a/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj b/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
index ea5d5df47536..e2ba61fb2108 100644
--- a/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
+++ b/src/System.Text.Json/pkg/Microsoft.Bcl.Json.Sources.pkgproj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <UsingTask TaskName="GenerateSourceWithPublicTypesAsInternal" AssemblyFile="$(PackagingTaskDir)Microsoft.DotNet.Build.Tasks.Packaging.dll" />
diff --git a/src/System.Text.Json/ref/Configurations.props b/src/System.Text.Json/ref/Configurations.props
index 27b88d26a7f4..b6bee41591b6 100644
--- a/src/System.Text.Json/ref/Configurations.props
+++ b/src/System.Text.Json/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Json/src/Configurations.props b/src/System.Text.Json/src/Configurations.props
index cb80d82c3f70..d11c064f1e0e 100644
--- a/src/System.Text.Json/src/Configurations.props
+++ b/src/System.Text.Json/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp-Unix;
diff --git a/src/System.Text.Json/src/Resources/Strings.resx b/src/System.Text.Json/src/Resources/Strings.resx
index 0d00205d7440..c6cb10eddcc2 100644
--- a/src/System.Text.Json/src/Resources/Strings.resx
+++ b/src/System.Text.Json/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Text.Json/src/System.Text.Json.csproj b/src/System.Text.Json/src/System.Text.Json.csproj
index 1b8ac6786035..c7cbfa3a9315 100644
--- a/src/System.Text.Json/src/System.Text.Json.csproj
+++ b/src/System.Text.Json/src/System.Text.Json.csproj
@@ -164,8 +164,7 @@
   <Target Name="GetSourcesToPackage" Returns="@(_sourceToPackage)" DependsOnTargets="Compile">
       <PropertyGroup>
         <_sourcePackageName>Microsoft.Bcl.Json.Sources</_sourcePackageName>
-        <_sourcePackageTargetLines><![CDATA[<?xml version="1.0" encoding="utf-8"?>
-<Project>
+        <_sourcePackageTargetLines><![CDATA[<Project>
   <ItemGroup Condition="'%24(ExcludeEmbeddedResourceFromPackage)' != 'true'">@(EmbeddedResource->'
     <EmbeddedResource Include="%24(MSBuildThisFileDirectory)%(FileName)%(Extension)" Link="$(_sourcePackageName)/%(FileName)%(Extension)" ManifestResourceName="%(ManifestResourceName)" />', '')
   </ItemGroup>
diff --git a/src/System.Text.Json/tests/Configurations.props b/src/System.Text.Json/tests/Configurations.props
index ef457e292e52..5085e7e5390f 100644
--- a/src/System.Text.Json/tests/Configurations.props
+++ b/src/System.Text.Json/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.Json/tests/Resources/Strings.resx b/src/System.Text.Json/tests/Resources/Strings.resx
index e86fd102a539..3249795a3c9b 100644
--- a/src/System.Text.Json/tests/Resources/Strings.resx
+++ b/src/System.Text.Json/tests/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <!-- 
     Microsoft ResX Schema 
     
diff --git a/src/System.Text.RegularExpressions/Directory.Build.props b/src/System.Text.RegularExpressions/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Text.RegularExpressions/Directory.Build.props
+++ b/src/System.Text.RegularExpressions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.2.1.0</AssemblyVersion>
diff --git a/src/System.Text.RegularExpressions/ref/Configurations.props b/src/System.Text.RegularExpressions/ref/Configurations.props
index 8fbfed8adee6..f74685e4dea7 100644
--- a/src/System.Text.RegularExpressions/ref/Configurations.props
+++ b/src/System.Text.RegularExpressions/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.RegularExpressions/src/Configurations.props b/src/System.Text.RegularExpressions/src/Configurations.props
index 266de993f43a..e2dfc9e0f76c 100644
--- a/src/System.Text.RegularExpressions/src/Configurations.props
+++ b/src/System.Text.RegularExpressions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Text.RegularExpressions/src/Resources/Strings.resx b/src/System.Text.RegularExpressions/src/Resources/Strings.resx
index 73b178738872..be9af53b9bff 100644
--- a/src/System.Text.RegularExpressions/src/Resources/Strings.resx
+++ b/src/System.Text.RegularExpressions/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Text.RegularExpressions/tests/Configurations.props b/src/System.Text.RegularExpressions/tests/Configurations.props
index 0ca1bfc137b4..2ae79c79febf 100644
--- a/src/System.Text.RegularExpressions/tests/Configurations.props
+++ b/src/System.Text.RegularExpressions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Text.RegularExpressions/tests/Performance/Configurations.props b/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
+++ b/src/System.Text.RegularExpressions/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Threading.AccessControl/Directory.Build.props b/src/System.Threading.AccessControl/Directory.Build.props
index 38448e58868c..98004a4badf7 100644
--- a/src/System.Threading.AccessControl/Directory.Build.props
+++ b/src/System.Threading.AccessControl/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.4.0</AssemblyVersion>
diff --git a/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj b/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
index f427fefe53a4..45ae2017cc5c 100644
--- a/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
+++ b/src/System.Threading.AccessControl/pkg/System.Threading.AccessControl.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\ref\System.Threading.AccessControl.csproj">
diff --git a/src/System.Threading.AccessControl/ref/Configurations.props b/src/System.Threading.AccessControl/ref/Configurations.props
index 4f11d6b6ba32..d5eb3685ae05 100644
--- a/src/System.Threading.AccessControl/ref/Configurations.props
+++ b/src/System.Threading.AccessControl/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <PackageConfigurations>
       netstandard;
diff --git a/src/System.Threading.AccessControl/src/Configurations.props b/src/System.Threading.AccessControl/src/Configurations.props
index 06fa68df5e7f..4de8a53437ec 100644
--- a/src/System.Threading.AccessControl/src/Configurations.props
+++ b/src/System.Threading.AccessControl/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
       net461-Windows_NT;
diff --git a/src/System.Threading.AccessControl/src/Resources/Strings.resx b/src/System.Threading.AccessControl/src/Resources/Strings.resx
index b4a5a6de41b4..265db70986ef 100644
--- a/src/System.Threading.AccessControl/src/Resources/Strings.resx
+++ b/src/System.Threading.AccessControl/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
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   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
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     <xsd:element name="root" msdata:IsDataSet="true">
diff --git a/src/System.Threading.AccessControl/tests/Configurations.props b/src/System.Threading.AccessControl/tests/Configurations.props
index b6f983f5d9de..611acec17f5f 100644
--- a/src/System.Threading.AccessControl/tests/Configurations.props
+++ b/src/System.Threading.AccessControl/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Channels/Directory.Build.props b/src/System.Threading.Channels/Directory.Build.props
index e717e081f0bc..75494287ea74 100644
--- a/src/System.Threading.Channels/Directory.Build.props
+++ b/src/System.Threading.Channels/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.1.0</AssemblyVersion>
diff --git a/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj b/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
index 0ef775b7e767..2da2c75f1dc7 100644
--- a/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
+++ b/src/System.Threading.Channels/pkg/System.Threading.Channels.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Threading.Channels.csproj">
diff --git a/src/System.Threading.Channels/ref/Configurations.props b/src/System.Threading.Channels/ref/Configurations.props
index da41bbfd7275..f216700b0dd9 100644
--- a/src/System.Threading.Channels/ref/Configurations.props
+++ b/src/System.Threading.Channels/ref/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Channels/src/Configurations.props b/src/System.Threading.Channels/src/Configurations.props
index 3ae3c274fb36..63c5e2de2455 100644
--- a/src/System.Threading.Channels/src/Configurations.props
+++ b/src/System.Threading.Channels/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Channels/src/Resources/Strings.resx b/src/System.Threading.Channels/src/Resources/Strings.resx
index 01229ace1d75..e485198e7f91 100644
--- a/src/System.Threading.Channels/src/Resources/Strings.resx
+++ b/src/System.Threading.Channels/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
+<root>
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diff --git a/src/System.Threading.Channels/tests/Configurations.props b/src/System.Threading.Channels/tests/Configurations.props
index 093f19aa9028..68ac7b9c023b 100644
--- a/src/System.Threading.Channels/tests/Configurations.props
+++ b/src/System.Threading.Channels/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Channels/tests/Performance/Configurations.props b/src/System.Threading.Channels/tests/Performance/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Threading.Channels/tests/Performance/Configurations.props
+++ b/src/System.Threading.Channels/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Overlapped/Directory.Build.props b/src/System.Threading.Overlapped/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading.Overlapped/Directory.Build.props
+++ b/src/System.Threading.Overlapped/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Threading.Overlapped/ref/Configurations.props b/src/System.Threading.Overlapped/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Overlapped/ref/Configurations.props
+++ b/src/System.Threading.Overlapped/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
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       netcoreapp;
diff --git a/src/System.Threading.Overlapped/src/Configurations.props b/src/System.Threading.Overlapped/src/Configurations.props
index 5015085ba53a..8f0029cd097c 100644
--- a/src/System.Threading.Overlapped/src/Configurations.props
+++ b/src/System.Threading.Overlapped/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Overlapped/src/Resources/Strings.resx b/src/System.Threading.Overlapped/src/Resources/Strings.resx
index b02132e3bcab..c7bbd1808ae4 100644
--- a/src/System.Threading.Overlapped/src/Resources/Strings.resx
+++ b/src/System.Threading.Overlapped/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Overlapped/tests/Configurations.props b/src/System.Threading.Overlapped/tests/Configurations.props
index ff7fda45759c..e31e3bc489fb 100644
--- a/src/System.Threading.Overlapped/tests/Configurations.props
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Dataflow/Directory.Build.props b/src/System.Threading.Tasks.Dataflow/Directory.Build.props
index 64d0b62f7a4e..def2ade2cebd 100644
--- a/src/System.Threading.Tasks.Dataflow/Directory.Build.props
+++ b/src/System.Threading.Tasks.Dataflow/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <PackageVersion>4.10.0</PackageVersion>
diff --git a/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj b/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj
index 824399fcc56b..d96cae41345f 100644
--- a/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj
+++ b/src/System.Threading.Tasks.Dataflow/pkg/System.Threading.Tasks.Dataflow.pkgproj
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
   <ItemGroup>
     <ProjectReference Include="..\src\System.Threading.Tasks.Dataflow.csproj">
diff --git a/src/System.Threading.Tasks.Dataflow/ref/Configurations.props b/src/System.Threading.Tasks.Dataflow/ref/Configurations.props
index 5d8a5668eeb8..b8e2624b97ec 100644
--- a/src/System.Threading.Tasks.Dataflow/ref/Configurations.props
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Dataflow/src/Configurations.props b/src/System.Threading.Tasks.Dataflow/src/Configurations.props
index 5d8a5668eeb8..b8e2624b97ec 100644
--- a/src/System.Threading.Tasks.Dataflow/src/Configurations.props
+++ b/src/System.Threading.Tasks.Dataflow/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Dataflow/src/Resources/Strings.resx b/src/System.Threading.Tasks.Dataflow/src/Resources/Strings.resx
index 934b7672977c..0c233f2bf9b4 100644
--- a/src/System.Threading.Tasks.Dataflow/src/Resources/Strings.resx
+++ b/src/System.Threading.Tasks.Dataflow/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Tasks.Dataflow/src/XmlDocs/System.Threading.Tasks.Dataflow.xml b/src/System.Threading.Tasks.Dataflow/src/XmlDocs/System.Threading.Tasks.Dataflow.xml
index 04d59b871d9d..76e02cf47eab 100644
--- a/src/System.Threading.Tasks.Dataflow/src/XmlDocs/System.Threading.Tasks.Dataflow.xml
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<!--
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
diff --git a/src/System.Threading.Tasks.Dataflow/tests/Configurations.props b/src/System.Threading.Tasks.Dataflow/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading.Tasks.Dataflow/tests/Configurations.props
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@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Extensions/Directory.Build.props b/src/System.Threading.Tasks.Extensions/Directory.Build.props
index ec32256af940..7d66b06af1e1 100644
--- a/src/System.Threading.Tasks.Extensions/Directory.Build.props
+++ b/src/System.Threading.Tasks.Extensions/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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diff --git a/src/System.Threading.Tasks.Extensions/ref/Configurations.props b/src/System.Threading.Tasks.Extensions/ref/Configurations.props
index 8fbfed8adee6..f74685e4dea7 100644
--- a/src/System.Threading.Tasks.Extensions/ref/Configurations.props
+++ b/src/System.Threading.Tasks.Extensions/ref/Configurations.props
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Tasks.Extensions/src/Configurations.props b/src/System.Threading.Tasks.Extensions/src/Configurations.props
index 3fdbbdff0b26..5136d110b51f 100644
--- a/src/System.Threading.Tasks.Extensions/src/Configurations.props
+++ b/src/System.Threading.Tasks.Extensions/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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       netcoreapp-Windows_NT;
diff --git a/src/System.Threading.Tasks.Extensions/tests/Configurations.props b/src/System.Threading.Tasks.Extensions/tests/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Tasks.Extensions/tests/Configurations.props
+++ b/src/System.Threading.Tasks.Extensions/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props b/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props
index 6644453ed1d6..a1eadd7648d8 100644
--- a/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props
+++ b/src/System.Threading.Tasks.Extensions/tests/Performance/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
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diff --git a/src/System.Threading.Tasks.Parallel/Directory.Build.props b/src/System.Threading.Tasks.Parallel/Directory.Build.props
index 6ba6b4671368..dd429856628d 100644
--- a/src/System.Threading.Tasks.Parallel/Directory.Build.props
+++ b/src/System.Threading.Tasks.Parallel/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
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     <AssemblyVersion>4.0.3.0</AssemblyVersion>
diff --git a/src/System.Threading.Tasks.Parallel/ref/Configurations.props b/src/System.Threading.Tasks.Parallel/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Tasks.Parallel/ref/Configurations.props
+++ b/src/System.Threading.Tasks.Parallel/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Parallel/src/Configurations.props b/src/System.Threading.Tasks.Parallel/src/Configurations.props
index 296b296ee218..591dde55dde6 100644
--- a/src/System.Threading.Tasks.Parallel/src/Configurations.props
+++ b/src/System.Threading.Tasks.Parallel/src/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks.Parallel/src/Resources/Strings.resx b/src/System.Threading.Tasks.Parallel/src/Resources/Strings.resx
index 5ee4d680ef8c..e9454fdaae75 100644
--- a/src/System.Threading.Tasks.Parallel/src/Resources/Strings.resx
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
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diff --git a/src/System.Threading.Tasks.Parallel/tests/Configurations.props b/src/System.Threading.Tasks.Parallel/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading.Tasks.Parallel/tests/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Tasks/Directory.Build.props b/src/System.Threading.Tasks/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading.Tasks/Directory.Build.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Threading.Tasks/ref/Configurations.props b/src/System.Threading.Tasks/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Tasks/ref/Configurations.props
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@@ -1,5 +1,4 @@
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+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks/src/Configurations.props b/src/System.Threading.Tasks/src/Configurations.props
index c4b354d18fcd..06e87b8a189c 100644
--- a/src/System.Threading.Tasks/src/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Tasks/tests/Configurations.props b/src/System.Threading.Tasks/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Threading.Tasks/tests/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/Directory.Build.props b/src/System.Threading.Thread/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading.Thread/Directory.Build.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Threading.Thread/ref/Configurations.props b/src/System.Threading.Thread/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Thread/ref/Configurations.props
+++ b/src/System.Threading.Thread/ref/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/src/Configurations.props b/src/System.Threading.Thread/src/Configurations.props
index c4b354d18fcd..06e87b8a189c 100644
--- a/src/System.Threading.Thread/src/Configurations.props
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-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/src/Resources/Strings.resx b/src/System.Threading.Thread/src/Resources/Strings.resx
index 57b369f0bb35..adb8c50d5b3d 100644
--- a/src/System.Threading.Thread/src/Resources/Strings.resx
+++ b/src/System.Threading.Thread/src/Resources/Strings.resx
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Thread/tests/Configurations.props b/src/System.Threading.Thread/tests/Configurations.props
index 60996909f847..90185507ad77 100644
--- a/src/System.Threading.Thread/tests/Configurations.props
+++ b/src/System.Threading.Thread/tests/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props b/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/DefaultApartmentStateMain/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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     <BuildConfigurations>
       netstandard;
diff --git a/src/System.Threading.Thread/tests/MTAMain/Configurations.props b/src/System.Threading.Thread/tests/MTAMain/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading.Thread/tests/MTAMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/MTAMain/Configurations.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Thread/tests/STAMain/Configurations.props b/src/System.Threading.Thread/tests/STAMain/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading.Thread/tests/STAMain/Configurations.props
+++ b/src/System.Threading.Thread/tests/STAMain/Configurations.props
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.ThreadPool/Directory.Build.props b/src/System.Threading.ThreadPool/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading.ThreadPool/Directory.Build.props
+++ b/src/System.Threading.ThreadPool/Directory.Build.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
+<Project>
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diff --git a/src/System.Threading.ThreadPool/ref/Configurations.props b/src/System.Threading.ThreadPool/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.ThreadPool/ref/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.ThreadPool/src/Configurations.props b/src/System.Threading.ThreadPool/src/Configurations.props
index 5015085ba53a..8f0029cd097c 100644
--- a/src/System.Threading.ThreadPool/src/Configurations.props
+++ b/src/System.Threading.ThreadPool/src/Configurations.props
@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.ThreadPool/tests/Configurations.props b/src/System.Threading.ThreadPool/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Threading.ThreadPool/tests/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading.Timer/Directory.Build.props b/src/System.Threading.Timer/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading.Timer/Directory.Build.props
+++ b/src/System.Threading.Timer/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Timer/ref/Configurations.props b/src/System.Threading.Timer/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading.Timer/ref/Configurations.props
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@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
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diff --git a/src/System.Threading.Timer/src/Configurations.props b/src/System.Threading.Timer/src/Configurations.props
index 5015085ba53a..8f0029cd097c 100644
--- a/src/System.Threading.Timer/src/Configurations.props
+++ b/src/System.Threading.Timer/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading.Timer/tests/Configurations.props b/src/System.Threading.Timer/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.Threading.Timer/tests/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading/Directory.Build.props b/src/System.Threading/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Threading/Directory.Build.props
+++ b/src/System.Threading/Directory.Build.props
@@ -1,5 +1,4 @@
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Threading/ref/Configurations.props b/src/System.Threading/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Threading/ref/Configurations.props
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diff --git a/src/System.Threading/src/Configurations.props b/src/System.Threading/src/Configurations.props
index 5015085ba53a..8f0029cd097c 100644
--- a/src/System.Threading/src/Configurations.props
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diff --git a/src/System.Threading/src/Resources/Strings.resx b/src/System.Threading/src/Resources/Strings.resx
index e5cc4427efda..36b72591906b 100644
--- a/src/System.Threading/src/Resources/Strings.resx
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Threading/tests/Configurations.props b/src/System.Threading/tests/Configurations.props
index 4c35b6322355..febffb03ac69 100644
--- a/src/System.Threading/tests/Configurations.props
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diff --git a/src/System.Threading/tests/Performance/Configurations.props b/src/System.Threading/tests/Performance/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Threading/tests/Performance/Configurations.props
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diff --git a/src/System.Transactions.Local/Directory.Build.props b/src/System.Transactions.Local/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
--- a/src/System.Transactions.Local/Directory.Build.props
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diff --git a/src/System.Transactions.Local/ref/Configurations.props b/src/System.Transactions.Local/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Transactions.Local/ref/Configurations.props
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diff --git a/src/System.Transactions.Local/src/Configurations.props b/src/System.Transactions.Local/src/Configurations.props
index aca7cfa92700..109210faad27 100644
--- a/src/System.Transactions.Local/src/Configurations.props
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diff --git a/src/System.Transactions.Local/src/Resources/Strings.resx b/src/System.Transactions.Local/src/Resources/Strings.resx
index 60082b482090..3cb826d62b5f 100644
--- a/src/System.Transactions.Local/src/Resources/Strings.resx
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diff --git a/src/System.Transactions.Local/tests/Configurations.props b/src/System.Transactions.Local/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Transactions.Local/tests/Configurations.props
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diff --git a/src/System.ValueTuple/Directory.Build.props b/src/System.ValueTuple/Directory.Build.props
index 54212ae92a33..009e8c675eef 100644
--- a/src/System.ValueTuple/Directory.Build.props
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diff --git a/src/System.ValueTuple/ref/Configurations.props b/src/System.ValueTuple/ref/Configurations.props
index ee2ff4abfe62..79f9c328692b 100644
--- a/src/System.ValueTuple/ref/Configurations.props
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diff --git a/src/System.ValueTuple/src/Configurations.props b/src/System.ValueTuple/src/Configurations.props
index ee2ff4abfe62..79f9c328692b 100644
--- a/src/System.ValueTuple/src/Configurations.props
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diff --git a/src/System.ValueTuple/tests/Configurations.props b/src/System.ValueTuple/tests/Configurations.props
index 2c27f0d86a22..f5d3d45ffbf4 100644
--- a/src/System.ValueTuple/tests/Configurations.props
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diff --git a/src/System.Web.HttpUtility/Directory.Build.props b/src/System.Web.HttpUtility/Directory.Build.props
index bee8f6e6e1f0..d8cf6babb2ab 100644
--- a/src/System.Web.HttpUtility/Directory.Build.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Web.HttpUtility/ref/Configurations.props b/src/System.Web.HttpUtility/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Web.HttpUtility/ref/Configurations.props
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@@ -1,5 +1,4 @@
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diff --git a/src/System.Web.HttpUtility/src/Configurations.props b/src/System.Web.HttpUtility/src/Configurations.props
index aca7cfa92700..109210faad27 100644
--- a/src/System.Web.HttpUtility/src/Configurations.props
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diff --git a/src/System.Web.HttpUtility/tests/Configurations.props b/src/System.Web.HttpUtility/tests/Configurations.props
index df9b80b230a8..581054d46db4 100644
--- a/src/System.Web.HttpUtility/tests/Configurations.props
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diff --git a/src/System.Windows.Extensions/Directory.Build.props b/src/System.Windows.Extensions/Directory.Build.props
index 373bd4c1c425..c8c6511677de 100644
--- a/src/System.Windows.Extensions/Directory.Build.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj b/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
index fb706c974509..a1f280597228 100644
--- a/src/System.Windows.Extensions/pkg/System.Windows.Extensions.pkgproj
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Windows.Extensions/ref/Configurations.props b/src/System.Windows.Extensions/ref/Configurations.props
index 323c11cf6937..89d6ac0f025b 100644
--- a/src/System.Windows.Extensions/ref/Configurations.props
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diff --git a/src/System.Windows.Extensions/src/Configurations.props b/src/System.Windows.Extensions/src/Configurations.props
index b77d16f00772..ac4c08c5c25a 100644
--- a/src/System.Windows.Extensions/src/Configurations.props
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-<Project DefaultTargets="Build">
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diff --git a/src/System.Windows.Extensions/src/Resources/Strings.resx b/src/System.Windows.Extensions/src/Resources/Strings.resx
index 6ad886a2a973..c20295ae3f64 100644
--- a/src/System.Windows.Extensions/src/Resources/Strings.resx
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diff --git a/src/System.Windows.Extensions/tests/Configurations.props b/src/System.Windows.Extensions/tests/Configurations.props
index 899049fcb776..1ce60d749f35 100644
--- a/src/System.Windows.Extensions/tests/Configurations.props
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diff --git a/src/System.Xml.ReaderWriter/Directory.Build.props b/src/System.Xml.ReaderWriter/Directory.Build.props
index b90a424e652c..988124d2d8e2 100644
--- a/src/System.Xml.ReaderWriter/Directory.Build.props
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diff --git a/src/System.Xml.ReaderWriter/ref/Configurations.props b/src/System.Xml.ReaderWriter/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.ReaderWriter/ref/Configurations.props
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diff --git a/src/System.Xml.ReaderWriter/src/Configurations.props b/src/System.Xml.ReaderWriter/src/Configurations.props
index 7a504cca09b8..cca087cb0cb1 100644
--- a/src/System.Xml.ReaderWriter/src/Configurations.props
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diff --git a/src/System.Xml.XDocument/Directory.Build.props b/src/System.Xml.XDocument/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Xml.XDocument/Directory.Build.props
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diff --git a/src/System.Xml.XDocument/ref/Configurations.props b/src/System.Xml.XDocument/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.XDocument/ref/Configurations.props
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diff --git a/src/System.Xml.XDocument/src/Configurations.props b/src/System.Xml.XDocument/src/Configurations.props
index 7a504cca09b8..cca087cb0cb1 100644
--- a/src/System.Xml.XDocument/src/Configurations.props
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diff --git a/src/System.Xml.XPath.XDocument/Directory.Build.props b/src/System.Xml.XPath.XDocument/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Xml.XPath.XDocument/Directory.Build.props
+++ b/src/System.Xml.XPath.XDocument/Directory.Build.props
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   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XPath.XDocument/ref/Configurations.props b/src/System.Xml.XPath.XDocument/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.XPath.XDocument/ref/Configurations.props
+++ b/src/System.Xml.XPath.XDocument/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XPath.XDocument/src/Configurations.props b/src/System.Xml.XPath.XDocument/src/Configurations.props
index 7a504cca09b8..cca087cb0cb1 100644
--- a/src/System.Xml.XPath.XDocument/src/Configurations.props
+++ b/src/System.Xml.XPath.XDocument/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XPath/Directory.Build.props b/src/System.Xml.XPath/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Xml.XPath/Directory.Build.props
+++ b/src/System.Xml.XPath/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XPath/ref/Configurations.props b/src/System.Xml.XPath/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.XPath/ref/Configurations.props
+++ b/src/System.Xml.XPath/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XPath/src/Configurations.props b/src/System.Xml.XPath/src/Configurations.props
index 7a504cca09b8..cca087cb0cb1 100644
--- a/src/System.Xml.XPath/src/Configurations.props
+++ b/src/System.Xml.XPath/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XmlDocument/Directory.Build.props b/src/System.Xml.XmlDocument/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Xml.XmlDocument/Directory.Build.props
+++ b/src/System.Xml.XmlDocument/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XmlDocument/ref/Configurations.props b/src/System.Xml.XmlDocument/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.XmlDocument/ref/Configurations.props
+++ b/src/System.Xml.XmlDocument/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XmlDocument/src/Configurations.props b/src/System.Xml.XmlDocument/src/Configurations.props
index 7a504cca09b8..cca087cb0cb1 100644
--- a/src/System.Xml.XmlDocument/src/Configurations.props
+++ b/src/System.Xml.XmlDocument/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/System.Xml.XmlSerializer/Directory.Build.props b/src/System.Xml.XmlSerializer/Directory.Build.props
index 4988fc07e1bc..0025ce6cf713 100644
--- a/src/System.Xml.XmlSerializer/Directory.Build.props
+++ b/src/System.Xml.XmlSerializer/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <AssemblyVersion>4.1.1.0</AssemblyVersion>
diff --git a/src/System.Xml.XmlSerializer/ref/Configurations.props b/src/System.Xml.XmlSerializer/ref/Configurations.props
index 5e830ff8b39b..f97cd5ea7a97 100644
--- a/src/System.Xml.XmlSerializer/ref/Configurations.props
+++ b/src/System.Xml.XmlSerializer/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       netcoreapp;
diff --git a/src/System.Xml.XmlSerializer/src/Configurations.props b/src/System.Xml.XmlSerializer/src/Configurations.props
index 5015085ba53a..8f0029cd097c 100644
--- a/src/System.Xml.XmlSerializer/src/Configurations.props
+++ b/src/System.Xml.XmlSerializer/src/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project DefaultTargets="Build">
   <PropertyGroup>
     <BuildConfigurations>
       uap-Windows_NT;
diff --git a/src/mscorlib.WinRT-Facade/ref/Configurations.props b/src/mscorlib.WinRT-Facade/ref/Configurations.props
index 5f2c40b8caaa..fbf7203fa1e5 100644
--- a/src/mscorlib.WinRT-Facade/ref/Configurations.props
+++ b/src/mscorlib.WinRT-Facade/ref/Configurations.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <BuildConfigurations>
       uap;
diff --git a/src/packages.builds b/src/packages.builds
index 829c89f8ff2e..eb33caecf681 100644
--- a/src/packages.builds
+++ b/src/packages.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project>
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/post.builds b/src/post.builds
index aa893e2a95bd..2afceda4e6c9 100644
--- a/src/post.builds
+++ b/src/post.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
 
   <Import Project="Directory.Build.props" />
diff --git a/src/pretest.builds b/src/pretest.builds
index 72de6ca80fed..76a2004139c1 100644
--- a/src/pretest.builds
+++ b/src/pretest.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="Directory.Build.props" />
 
diff --git a/src/ref.builds b/src/ref.builds
index 13fb2bed1be2..55aeef0d65ba 100644
--- a/src/ref.builds
+++ b/src/ref.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/shims/ApiCompat.proj b/src/shims/ApiCompat.proj
index ab70c7ab48ff..2d79ff93e992 100644
--- a/src/shims/ApiCompat.proj
+++ b/src/shims/ApiCompat.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <!-- ApiCompat-specific build configurations for runtime-only targets -->
diff --git a/src/shims/Directory.Build.props b/src/shims/Directory.Build.props
index e6db94386199..0ddbf9e5a8f5 100644
--- a/src/shims/Directory.Build.props
+++ b/src/shims/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <!-- shared configurations between shims and apicompat -->
     <BuildConfigurations>
diff --git a/src/shims/manual/Directory.Build.props b/src/shims/manual/Directory.Build.props
index abc84621426d..c249a4fa47b5 100644
--- a/src/shims/manual/Directory.Build.props
+++ b/src/shims/manual/Directory.Build.props
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build">
+<Project>
   <PropertyGroup>
     <PackageConfigurations>
       netcoreapp2.0;
diff --git a/src/shims/shims.proj b/src/shims/shims.proj
index 321259f6dca1..083820478b15 100644
--- a/src/shims/shims.proj
+++ b/src/shims/shims.proj
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <PropertyGroup>
     <PackageConfigurations>
diff --git a/src/src.builds b/src/src.builds
index c40822ec579b..aeb419cfb058 100644
--- a/src/src.builds
+++ b/src/src.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />
 
diff --git a/src/tests.builds b/src/tests.builds
index 9f301180396c..1d8ed80cbe89 100644
--- a/src/tests.builds
+++ b/src/tests.builds
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), Directory.Build.props))\Directory.Build.props" />