TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _breaking-82377:
+
+======================================================================
+Breaking: #82377 - Option to allow uploading system extensions removed
+======================================================================
+
+See :issue:`82377`
+
+Description
+===========
+
+The option to allow uploading additional extensions as system extensions in TYPO3 has been removed
+without substitution.
+
+Disclaimer: It is highly discouraged by the TYPO3 Core to modify anything within `typo3/sysext/`,
+especially adding extensions, as typo3conf/ is the folder to add or override extensions.
+
+If an administrator needs to do changes within `typo3/sysext/` it's at his/her own risk,
+and should not be encouraged to be possible from TYPO3 itself.
+
+
+Impact
+======
+
+The possibility to upload an extension into `typo3/sysext/` via the Extension Manager / TYPO3 Backend
+interface is removed. System extensions can only be added or modified via the file system now.
+
+
+Affected Installations
+======================
+
+TYPO3 instances having the option `$GLOBALS['TYPO3_CONF_VARS']['EXT']['allowSystemInstall']` enabled and do not
+run in TYPO3's Composer Mode.
+
+As this option was disabled by default for over 10 years, it is highly unlikely this change will
+affect a regular instance.
+
+
+Migration
+=========
+
+The mentioned option, if set, is automatically removed when accessing the Install Tool through
+the :php:`SilentMigrationService`.
+
+.. index:: LocalConfiguration, FullyScanned