[Typo3] BE admin login not working after upgrade

[Olivier Dobberkau]

Jane Larsen wrote:

> I cant login anymore! I've tried the standard login, the login I used
> before upgrading and even tried to set a new admin user from the DB
> analyxer in the install tool but no luck so far...
>
> Any ideas as to how I gain access again?

a) which extensions are installed?
b) where are they installed? typo3conf / typo3/ext ?

i had the same problem with the ldap auth installed.
deinstalling (removing it from the localconf.php) helped.

olivier