diff --git a/src/SourceBuild/tarball/content/build.sh b/src/SourceBuild/tarball/content/build.sh
index 0d6bbb91e530..e899d2f808c0 100755
--- a/src/SourceBuild/tarball/content/build.sh
+++ b/src/SourceBuild/tarball/content/build.sh
@@ -178,6 +178,8 @@ if [ "$alternateTarget" == "true" ]; then
   "$CLI_ROOT/dotnet" $CLI_ROOT/sdk/$SDK_VERSION/MSBuild.dll "$SCRIPT_ROOT/build.proj" /bl:$SCRIPT_ROOT/artifacts/log/Debug/BuildTests_$LogDateStamp.binlog /fileLoggerParameters:LogFile=$SCRIPT_ROOT/artifacts/logs/BuildTests_$LogDateStamp.log /clp:v=m ${MSBUILD_ARGUMENTS[@]} "$@"
 else
   $CLI_ROOT/dotnet $CLI_ROOT/sdk/$SDK_VERSION/MSBuild.dll /bl:$SCRIPT_ROOT/artifacts/log/Debug/BuildXPlatTasks_$LogDateStamp.binlog /fileLoggerParameters:LogFile=$SCRIPT_ROOT/artifacts/logs/BuildXPlatTasks_$LogDateStamp.log $SCRIPT_ROOT/tools-local/init-build.proj /t:PrepareOfflineLocalTools ${MSBUILD_ARGUMENTS[@]} "$@"
+  # kill off the MSBuild server so that on future invocations we pick up our custom SDK Resolver
+  $CLI_ROOT/dotnet build-server shutdown
 
   $CLI_ROOT/dotnet $CLI_ROOT/sdk/$SDK_VERSION/MSBuild.dll /bl:$SCRIPT_ROOT/artifacts/log/Debug/Build_$LogDateStamp.binlog /fileLoggerParameters:LogFile=$SCRIPT_ROOT/artifacts/logs/Build_$LogDateStamp.log $SCRIPT_ROOT/build.proj ${MSBUILD_ARGUMENTS[@]} "$@"
 fi