Problems with login

[Sarah85]

Hi 
Problem, I restore my forum and database.
Usually all ok and I can login .
But this time I can't login in forum and of course not in admin cp. Also no new registration possible???
All permission 777 and 666 are set right .
What could it be , what setting to allow me to login and / or Register new user !

Regards to all

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Problem solved
If someone has the same problem, here one solution
I removed the slash / from the URL

WRONG
$settings['cookiedomain'] = ".example.com/";

RIGHT
$settings['cookiedomain'] = ".example.com";