[TYPO3-english] Login error

[Marco Mahieu]

Hi everybody,

I have a very weard problem that i've been working on for hours/days. I have a webserver with multiple installations of Typo3, all in version 4.6.0. Al websites work fine, but one. This one used to work fine to, but that changed al of a sudden.

The problem is i can't login to the backend anymore. First i tried the more common things like resetting the password from the database. Still coulnd login. Then I started searching on the internet, I found a lot of problems, but non of the solutions worked for me.

In the database table sys_log i get 2 rows every time I try to login.
First:
Core: Error handler (BE): PHP Warning: session_start(): open(/var/lib/php/session/sess_7l14gl9cb82pg2am90qidgt6o7, O_RDWR) failed: Permission denied (13) in /var/www/vhosts/<domainname>/httpdocs/t3lib/class.t3lib_userauth.php line 1243
Second:
Login-attempt from %s (%s), username '%s', password not accepted!

It can't be the premission rights or the PHP version, because the other websites on the same server work fine and nothing has been changed.

Does anybody have any idea how to solve this problem.

Thanks in advance.