TYPO3 Core

Do you have a Typo3 installed in a subfolder of your domain ? Or in the root of your domain ?

Same here. TYPO3 11.4.0 in subfolders of a MAMP localhost served by Apache. Both classic and composer fresh installs. Only the installtool is reachable. The mentioned rewrite rules are already in place by default.

This has been fixed through https://review.typo3.org/c/Packages/TYPO3.CMS/+/71422 , corresponding issue: https://forge.typo3.org/issues/94054.

The documentation was adjusted, as the root-htaccess in the install sysext templates. Have you upgraded to 11.5.2 yet - or may you reavulate with updated documentation / root-htaccess template ?

Can we close this issue ?

apache
11.5.2
front end OK
install OK
access to backend login screen OK
https://w.2sapins.ponctey.fr/sgc/typo3/ (no public access)
and no access to backend
https://w.2sapins.ponctey.fr/sgc/typo3/login?loginProvider=1433416747 error 404

demeter:/srv/www/htdocs #
drwxr-xr-x 6 wwwrun www 136 13 nov. 21:14 sgc/
drwxr-xr-x 4 root root 214 21 sept. 10:53 typo3_src-10.4.21/
drwxr-xr-x 4 root root 214 2 nov. 09:25 typo3_src-11.5.2/

demeter:/srv/www/htdocs/sgc #
lrwxrwxrwx 1 root root 19 5 nov. 2018 index.php -> typo3_src/index.php
lrwxrwxrwx 1 root root 15 5 nov. 2018 typo3 -> typo3_src/typo3/
drwxr-xr-x 6 wwwrun www 140 13 nov. 21:18 typo3conf/
lrwxrwxrwx 1 root root 32 13 nov. 21:14 typo3_src -> /srv/www/htdocs/typo3_src-11.5.2/
drwxr-xr-x 4 wwwrun www 49 10 oct. 10:28 typo3temp/
drwxr-xr-x 4 wwwrun www 56 6 août 2019 uploads/

(access to backend OK with the link to typo3_src-10.4.21/ )

it is OK with : AllowOverride All
Sorry