diff --git a/apps/files_sharing/lib/Controller/ShareAPIController.php b/apps/files_sharing/lib/Controller/ShareAPIController.php
index 77faa2ab0c97a..988b73060be64 100644
--- a/apps/files_sharing/lib/Controller/ShareAPIController.php
+++ b/apps/files_sharing/lib/Controller/ShareAPIController.php
@@ -586,7 +586,8 @@ public function deleteShare(string $id): DataResponse {
 	 * @param string $publicUpload If public uploading is allowed
 	 * @param string $password Password for the share
 	 * @param string|null $sendPasswordByTalk Send the password for the share over Talk
-	 * @param string $expireDate Expiry date of the share using user timezone at 00:00. It means date in UTC timezone will be used.
+	 * @param ?string $expireDate The expiry date of the share in the user's timezone (UTC) at 00:00.
+	 *                If $expireDate is not supplied or set to `null`, the system default will be used.
 	 * @param string $note Note for the share
 	 * @param string $label Label for the share (only used in link and email)
 	 * @param string|null $attributes Additional attributes for the share
@@ -812,19 +813,19 @@ public function createShare(
 			$share->setPermissions($permissions);
 		} elseif ($shareType === IShare::TYPE_ROOM) {
 			try {
-				$this->getRoomShareHelper()->createShare($share, $shareWith, $permissions, $expireDate);
+				$this->getRoomShareHelper()->createShare($share, $shareWith, $permissions, $expireDate ?? '');
 			} catch (QueryException $e) {
 				throw new OCSForbiddenException($this->l->t('Sharing %s failed because the back end does not support room shares', [$node->getPath()]));
 			}
 		} elseif ($shareType === IShare::TYPE_DECK) {
 			try {
-				$this->getDeckShareHelper()->createShare($share, $shareWith, $permissions, $expireDate);
+				$this->getDeckShareHelper()->createShare($share, $shareWith, $permissions, $expireDate ?? '');
 			} catch (QueryException $e) {
 				throw new OCSForbiddenException($this->l->t('Sharing %s failed because the back end does not support room shares', [$node->getPath()]));
 			}
 		} elseif ($shareType === IShare::TYPE_SCIENCEMESH) {
 			try {
-				$this->getSciencemeshShareHelper()->createShare($share, $shareWith, $permissions, $expireDate);
+				$this->getSciencemeshShareHelper()->createShare($share, $shareWith, $permissions, $expireDate ?? '');
 			} catch (QueryException $e) {
 				throw new OCSForbiddenException($this->l->t('Sharing %s failed because the back end does not support ScienceMesh shares', [$node->getPath()]));
 			}
diff --git a/apps/files_sharing/openapi.json b/apps/files_sharing/openapi.json
index 9a869feb3b2ce..80a8f5de1ed5a 100644
--- a/apps/files_sharing/openapi.json
+++ b/apps/files_sharing/openapi.json
@@ -1755,10 +1755,10 @@
                     {
                         "name": "expireDate",
                         "in": "query",
-                        "description": "Expiry date of the share using user timezone at 00:00. It means date in UTC timezone will be used.",
+                        "description": "The expiry date of the share in the user's timezone (UTC) at 00:00. If $expireDate is not supplied or set to `null`, the system default will be used.",
                         "schema": {
                             "type": "string",
-                            "default": ""
+                            "nullable": true
                         }
                     },
                     {
diff --git a/build/integration/features/bootstrap/Sharing.php b/build/integration/features/bootstrap/Sharing.php
index a38ef392e61f0..9e4cdb4ab7dec 100644
--- a/build/integration/features/bootstrap/Sharing.php
+++ b/build/integration/features/bootstrap/Sharing.php
@@ -81,7 +81,9 @@ public function asCreatingAShareWith($user, $body) {
 			$fd = $body->getRowsHash();
 			if (array_key_exists('expireDate', $fd)) {
 				$dateModification = $fd['expireDate'];
-				$fd['expireDate'] = date('Y-m-d', strtotime($dateModification));
+				if (!empty($dateModification)) {
+					$fd['expireDate'] = date('Y-m-d', strtotime($dateModification));
+				}
 			}
 			$options['form_params'] = $fd;
 		}
@@ -328,7 +330,9 @@ public function createShare($user,
 	public function isFieldInResponse($field, $contentExpected) {
 		$data = simplexml_load_string($this->response->getBody())->data[0];
 		if ((string)$field == 'expiration') {
-			$contentExpected = date('Y-m-d', strtotime($contentExpected)) . " 00:00:00";
+			if(!empty($contentExpected)) {
+				$contentExpected = date('Y-m-d', strtotime($contentExpected)) . " 00:00:00";
+			}
 		}
 		if (count($data->element) > 0) {
 			foreach ($data as $element) {
diff --git a/build/integration/sharing_features/sharing-v1.feature b/build/integration/sharing_features/sharing-v1.feature
index ca030bd3a31fa..2b5d4e8933184 100644
--- a/build/integration/sharing_features/sharing-v1.feature
+++ b/build/integration/sharing_features/sharing-v1.feature
@@ -229,6 +229,24 @@ Feature: sharing
       | url | AN_URL |
       | mimetype | httpd/unix-directory |
 
+  Scenario: Creating a new share with expiration date removed, when default expiration is set
+    Given user "user0" exists
+    And user "user1" exists
+    And parameter "shareapi_default_expire_date" of app "core" is set to "yes"
+    And As an "user0"
+    When creating a share with
+      | path | welcome.txt |
+      | shareWith | user1 |
+      | shareType | 0 |
+      | expireDate | |
+    Then the OCS status code should be "100"
+    And the HTTP status code should be "200"
+    And Getting info of last share
+    Then the OCS status code should be "100"
+    And the HTTP status code should be "200"
+    And Share fields of last share match with
+      | expiration ||
+
   Scenario: Creating a new public share, updating its password and getting its info
     Given user "user0" exists
     And As an "user0"
diff --git a/lib/private/Share20/Manager.php b/lib/private/Share20/Manager.php
index f9280d75887a2..8008c4bebc5a5 100644
--- a/lib/private/Share20/Manager.php
+++ b/lib/private/Share20/Manager.php
@@ -85,43 +85,9 @@
  * This class is the communication hub for all sharing related operations.
  */
 class Manager implements IManager {
-	/** @var IProviderFactory */
-	private $factory;
-	private LoggerInterface $logger;
-	/** @var IConfig */
-	private $config;
-	/** @var ISecureRandom */
-	private $secureRandom;
-	/** @var IHasher */
-	private $hasher;
-	/** @var IMountManager */
-	private $mountManager;
-	/** @var IGroupManager */
-	private $groupManager;
-	/** @var IL10N */
-	private $l;
-	/** @var IFactory */
-	private $l10nFactory;
-	/** @var IUserManager */
-	private $userManager;
-	/** @var IRootFolder */
-	private $rootFolder;
-	/** @var LegacyHooks */
-	private $legacyHooks;
-	/** @var IMailer */
-	private $mailer;
-	/** @var IURLGenerator */
-	private $urlGenerator;
-	/** @var \OC_Defaults */
-	private $defaults;
-	/** @var IEventDispatcher */
-	private $dispatcher;
-	/** @var IUserSession */
-	private $userSession;
-	/** @var KnownUserService */
-	private $knownUserService;
-	private ShareDisableChecker $shareDisableChecker;
-	private IDateTimeZone $dateTimeZone;
+
+	private IL10N|null $l;
+	private LegacyHooks $legacyHooks;
 
 	public function __construct(
 		LoggerInterface $logger,
@@ -157,15 +123,7 @@ public function __construct(
 		$this->rootFolder = $rootFolder;
 		// The constructor of LegacyHooks registers the listeners of share events
 		// do not remove if those are not properly migrated
-		$this->legacyHooks = new LegacyHooks($dispatcher);
-		$this->mailer = $mailer;
-		$this->urlGenerator = $urlGenerator;
-		$this->defaults = $defaults;
-		$this->dispatcher = $dispatcher;
-		$this->userSession = $userSession;
-		$this->knownUserService = $knownUserService;
-		$this->shareDisableChecker = $shareDisableChecker;
-		$this->dateTimeZone = $dateTimeZone;
+		$this->legacyHooks = new LegacyHooks($this->dispatcher);
 	}
 
 	/**
@@ -391,26 +349,6 @@ protected function validateExpirationDateInternal(IShare $share) {
 
 		$expirationDate = $share->getExpirationDate();
 
-		if ($expirationDate !== null) {
-			$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
-			$expirationDate->setTime(0, 0, 0);
-
-			$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$date->setTime(0, 0, 0);
-			if ($date >= $expirationDate) {
-				$message = $this->l->t('Expiration date is in the past');
-				throw new GenericShareException($message, $message, 404);
-			}
-		}
-
-		// If expiredate is empty set a default one if there is a default
-		$fullId = null;
-		try {
-			$fullId = $share->getFullId();
-		} catch (\UnexpectedValueException $e) {
-			// This is a new share
-		}
-
 		if ($isRemote) {
 			$defaultExpireDate = $this->shareApiRemoteDefaultExpireDate();
 			$defaultExpireDays = $this->shareApiRemoteDefaultExpireDays();
@@ -422,28 +360,53 @@ protected function validateExpirationDateInternal(IShare $share) {
 			$configProp = 'internal_defaultExpDays';
 			$isEnforced = $this->shareApiInternalDefaultExpireDateEnforced();
 		}
-		if ($fullId === null && $expirationDate === null && $defaultExpireDate) {
-			$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$expirationDate->setTime(0, 0, 0);
-			$days = (int)$this->config->getAppValue('core', $configProp, (string)$defaultExpireDays);
-			if ($days > $defaultExpireDays) {
-				$days = $defaultExpireDays;
+
+		// If $expirationDate is falsy, noExpirationDate is true and expiration not enforced
+		// Then skip expiration date validation as null is accepted
+		if(!($share->getNoExpirationDate() && !$isEnforced)) {
+			if ($expirationDate != null) {
+				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
+				$expirationDate->setTime(0, 0, 0);
+
+				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$date->setTime(0, 0, 0);
+				if ($date >= $expirationDate) {
+					$message = $this->l->t('Expiration date is in the past');
+					throw new GenericShareException($message, $message, 404);
+				}
 			}
-			$expirationDate->add(new \DateInterval('P' . $days . 'D'));
-		}
 
-		// If we enforce the expiration date check that is does not exceed
-		if ($isEnforced) {
-			if ($expirationDate === null) {
-				throw new \InvalidArgumentException('Expiration date is enforced');
+			// If expiredate is empty set a default one if there is a default
+			$fullId = null;
+			try {
+				$fullId = $share->getFullId();
+			} catch (\UnexpectedValueException $e) {
+				// This is a new share
 			}
 
-			$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$date->setTime(0, 0, 0);
-			$date->add(new \DateInterval('P' . $defaultExpireDays . 'D'));
-			if ($date < $expirationDate) {
-				$message = $this->l->n('Cannot set expiration date more than %n day in the future', 'Cannot set expiration date more than %n days in the future', $defaultExpireDays);
-				throw new GenericShareException($message, $message, 404);
+			if ($fullId === null && $expirationDate === null && $defaultExpireDate) {
+				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$expirationDate->setTime(0, 0, 0);
+				$days = (int)$this->config->getAppValue('core', $configProp, (string)$defaultExpireDays);
+				if ($days > $defaultExpireDays) {
+					$days = $defaultExpireDays;
+				}
+				$expirationDate->add(new \DateInterval('P' . $days . 'D'));
+			}
+
+			// If we enforce the expiration date check that is does not exceed
+			if ($isEnforced) {
+				if (empty($expirationDate)) {
+					throw new \InvalidArgumentException('Expiration date is enforced');
+				}
+
+				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$date->setTime(0, 0, 0);
+				$date->add(new \DateInterval('P' . $defaultExpireDays . 'D'));
+				if ($date < $expirationDate) {
+					$message = $this->l->n('Cannot set expiration date more than %n day in the future', 'Cannot set expiration date more than %n days in the future', $defaultExpireDays);
+					throw new GenericShareException($message, $message, 404);
+				}
 			}
 		}
 
@@ -476,51 +439,57 @@ protected function validateExpirationDateInternal(IShare $share) {
 	 */
 	protected function validateExpirationDateLink(IShare $share) {
 		$expirationDate = $share->getExpirationDate();
-
-		if ($expirationDate !== null) {
-			$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
-			$expirationDate->setTime(0, 0, 0);
-
-			$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$date->setTime(0, 0, 0);
-			if ($date >= $expirationDate) {
-				$message = $this->l->t('Expiration date is in the past');
-				throw new GenericShareException($message, $message, 404);
+		$isEnforced = $this->shareApiLinkDefaultExpireDateEnforced();
+
+		// If $expirationDate is falsy, noExpirationDate is true and expiration not enforced
+		// Then skip expiration date validation as null is accepted
+		if(!($share->getNoExpirationDate() && !$isEnforced)) {
+			if ($expirationDate !== null) {
+				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
+				$expirationDate->setTime(0, 0, 0);
+	
+				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$date->setTime(0, 0, 0);
+				if ($date >= $expirationDate) {
+					$message = $this->l->t('Expiration date is in the past');
+					throw new GenericShareException($message, $message, 404);
+				}
 			}
-		}
-
-		// If expiredate is empty set a default one if there is a default
-		$fullId = null;
-		try {
-			$fullId = $share->getFullId();
-		} catch (\UnexpectedValueException $e) {
-			// This is a new share
-		}
 
-		if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
-			$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$expirationDate->setTime(0, 0, 0);
-
-			$days = (int)$this->config->getAppValue('core', 'link_defaultExpDays', (string)$this->shareApiLinkDefaultExpireDays());
-			if ($days > $this->shareApiLinkDefaultExpireDays()) {
-				$days = $this->shareApiLinkDefaultExpireDays();
+			// If expiredate is empty set a default one if there is a default
+			$fullId = null;
+			try {
+				$fullId = $share->getFullId();
+			} catch (\UnexpectedValueException $e) {
+				// This is a new share
+			}
+	
+			if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
+				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$expirationDate->setTime(0, 0, 0);
+	
+				$days = (int)$this->config->getAppValue('core', 'link_defaultExpDays', (string)$this->shareApiLinkDefaultExpireDays());
+				if ($days > $this->shareApiLinkDefaultExpireDays()) {
+					$days = $this->shareApiLinkDefaultExpireDays();
+				}
+				$expirationDate->add(new \DateInterval('P' . $days . 'D'));
 			}
-			$expirationDate->add(new \DateInterval('P' . $days . 'D'));
-		}
-
-		// If we enforce the expiration date check that is does not exceed
-		if ($this->shareApiLinkDefaultExpireDateEnforced()) {
-			if ($expirationDate === null) {
-				throw new \InvalidArgumentException('Expiration date is enforced');
+	
+			// If we enforce the expiration date check that is does not exceed
+			if ($isEnforced) {
+				if (empty($expirationDate)) {
+					throw new \InvalidArgumentException('Expiration date is enforced');
+				}
+	
+				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
+				$date->setTime(0, 0, 0);
+				$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
+				if ($date < $expirationDate) {
+					$message = $this->l->n('Cannot set expiration date more than %n day in the future', 'Cannot set expiration date more than %n days in the future', $this->shareApiLinkDefaultExpireDays());
+					throw new GenericShareException($message, $message, 404);
+				}
 			}
 
-			$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-			$date->setTime(0, 0, 0);
-			$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
-			if ($date < $expirationDate) {
-				$message = $this->l->n('Cannot set expiration date more than %n day in the future', 'Cannot set expiration date more than %n days in the future', $this->shareApiLinkDefaultExpireDays());
-				throw new GenericShareException($message, $message, 404);
-			}
 		}
 
 		$accepted = true;
diff --git a/lib/private/Share20/Share.php b/lib/private/Share20/Share.php
index c80d332e9dba2..0493ab4782121 100644
--- a/lib/private/Share20/Share.php
+++ b/lib/private/Share20/Share.php
@@ -99,7 +99,6 @@ class Share implements IShare {
 
 	/** @var ICacheEntry|null */
 	private $nodeCacheEntry;
-
 	/** @var bool */
 	private $hideDownload = false;
 
@@ -421,6 +420,21 @@ public function getExpirationDate() {
 		return $this->expireDate;
 	}
 
+	/**
+	 * @inheritdoc
+	 */
+	public function setNoExpirationDate(bool $noExpirationDate) {
+		$this->noExpirationDate = $noExpirationDate;
+		return $this;
+	}
+
+	/**
+	 * @inheritdoc
+	 */
+	public function getNoExpirationDate(): bool {
+		return $this->noExpirationDate;
+	}
+
 	/**
 	 * @inheritdoc
 	 */
diff --git a/lib/public/Share/IShare.php b/lib/public/Share/IShare.php
index e5a943b0bac89..14c6523784c70 100644
--- a/lib/public/Share/IShare.php
+++ b/lib/public/Share/IShare.php
@@ -385,20 +385,38 @@ public function getNote();
 	/**
 	 * Set the expiration date
 	 *
-	 * @param null|\DateTime $expireDate
+	 * @param \DateTime|null $expireDate
 	 * @return \OCP\Share\IShare The modified object
 	 * @since 9.0.0
 	 */
-	public function setExpirationDate($expireDate);
+	public function setExpirationDate(\DateTime|null $expireDate);
 
 	/**
 	 * Get the expiration date
 	 *
-	 * @return null|\DateTime
+	 * @return \DateTime|null
 	 * @since 9.0.0
 	 */
 	public function getExpirationDate();
 
+	/**
+	 * Set overwrite flag for falsy expiry date vavlues
+	 *
+	 * @param bool $noExpirationDate
+	 * @return \OCP\Share\IShare The modified object
+	 * @since 28.0.6
+	 */
+	public function setNoExpirationDate(bool $noExpirationDate);
+
+
+	/**
+	 * Get value of overwrite falsy expiry date flag
+	 *
+	 * @return bool
+	 * @since 28.0.6
+	 */
+	public function getNoExpirationDate();
+
 	/**
 	 * Is the share expired ?
 	 *