Attention
TYPO3 v11 has reached end-of-life as of October 31th 2024 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 v11 here: TYPO3 ELTS.
Configuration files
The configuration files Local and
Additional are located in the directory
public/typo3conf/ in Composer-based
installations. In legacy installations they are located in
typo3conf/.
The most important configuration file is
Local. It contains local settings of the
main global PHP array $GLOBALS, crucial settings
like database connect credentials are in here. The file is managed by the
Admin Tools.
The settings in the Local can be overridden in the
Additional file, which is never touched by TYPO3
internal management tools. Be aware that having settings within
Additional may prevent the system from performing
automatic upgrades and should be used with care and only if you know what
you are doing.