Breaking: #82377 - Option to allow uploading system extensions removed ¶
See Issue #82377
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
especially adding extensions, as typo3conf/ is the folder to add or override extensions.
If an administrator needs to do changes within
it’s at his/her own risk,
and should not be encouraged to be possible from TYPO3 itself.
The possibility to upload an extension into
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
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.
The mentioned option, if set, is automatically removed when accessing the Install Tool through