hey, so you were right . when I set the field "User active" to "Block" and "Invert active values" , it works now. Thank you.

But my MySql Server ist configured by Plesk. Maybe here are another settings adjusted.

okay, that's strange. maybe its a misconfiguration of my mysql server? can you give me the config of your mysql server? so I can compare it

Okay, Thanks for your time!

Yes this is only the one server. i have duplicate the login information's to "default" and now without errors, but its no synchronizing (i cant see the Users of the another Database)

Hi Andreas, yes i click on "Save" after Verify Settings :)