I get an access denied page since yesterday. Sometimes I can login, but after a couple of seconds the error appears (login info is correct). Sometimes I can't even login.
I tried different browsers, cleared the caches from these browsers, checked the time of the server (is correct), emptied the sessions table, ... I've looked for hours now to get it working again, but nothing is coming up.
Is there someone who could help me? I'm using Drupal 7.