Thread:Project:Support desk/Cannot login after upgrade from 1.9 to 1.19.11

Hi,

I've upgraded a mediawiki installation from version 1.9 to 1.19.11. I've deactivated all extensions and I've reset the WikiSysop user's password using the changePassword script. When I try to login with the WikiSysop user, nothing happens - I get no error message, I see no error in the apache log files, and the site just reloads without logging me in. This happens with any browser. Cookies are enabled. PHP is version 5.3.28, MySQL is MariaDB 5.5.33.

What is wrong?