If you have a lots or very big LDAP groups in your mapping configuration it might take a while to cache all of them. If that's your issue, http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Performances#HDisableLD… might help. --- [Visit Topic](https://discourse.xwiki.org/t/ldap-login-issue/226/6) to respond. You are receiving this because you enabled mailing list mode. To unsubscribe from these emails, [click here](https://discourse.xwiki.org/email/unsubscribe/ca4c4392fd52018f8cb55a7….

No, the only officially slow thing I know during LDAP authentication is group sync (and it does not anything to do with the database). --- [Visit Topic](https://discourse.xwiki.org/t/ldap-login-issue/226/8) to respond. You are receiving this because you enabled mailing list mode. To unsubscribe from these emails, [click here](https://discourse.xwiki.org/email/unsubscribe/d0f59953d0587f39d4c99c3….

[quote="matmassa, post:9, topic:226"] Are you sure that this could not be caused by an error in database (first I deleted those users)? [/quote] I never said that. I have absolutely no idea what your database would be slow, just saying that it should not have anything to do with the LDAP authenticator. [quote="matmassa, post:9, topic:226"] Now for example I can login with that user but in log file I see the "_1" user, so the ldap user is correct but has a wrong object linked (or something like that). [/quote] Did you look at the object ? --- [Visit Topic](https://discourse.xwiki.org/t/ldap-login-issue/226/10) to respond. You are receiving this because you enabled mailing list mode. To unsubscribe from these emails, [click here](https://discourse.xwiki.org/email/unsubscribe/046b650139af0cbc503c108….