Attention
TYPO3 v12 has reached end-of-life as of April 30th 2026 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 v12 here: TYPO3 ELTS.
Post-upgrade tasks for major TYPO3 Core updates
- Flush TYPO3 and PHP Cache
- Create missing tables and columns in the Database Analyzer
- Run all Upgrade wizards
- Change or remove columns and tables in the database analyzer
- Flush TYPO3 and PHP Cache (again)
- Reset backend user preferences (optional)
- Update the language packs
- Verify webserver configuration (.htaccess)