Attention

TYPO3 v10 has reached end-of-life as of April 30th 2023 and is no longer being maintained. Use the version switcher on the top left of this page to select documentation for a supported version of TYPO3.

Need more time before upgrading? You can purchase Extended Long Term Support (ELTS) for TYPO3 v10 here: TYPO3 ELTS.

Clear Caches

You should also clear all caches when upgrading.

Go to "Maintenance" and click "Flush":

Flush Caches

The option "Flush" in the Install Tool.

Additionally, after an upgrade to a new major version, you should also delete the other temporary files, which TYPO3 saves in typo3temp/. In the Install Tool go to "Clean up" to do so.

Remove temporary assets.

The option "Remove temporary assets" in the Install Tool.