we updated ZCM last week to 11SP3 and everything seems to work fine.
Till today.
Most of our non-super-admins can't login anymore to the Zenworks-Control-Center.
They fill in their Username and Password, press Enter, and nothing happend. "Waiting for Server" says the browser. And after 10 Minutes you are back on the login screen without error message (username and password are right!).
If I login on the same computer / browser with my super admin rights, i'm in right now.

Is there any logfile to check what the problem could be?? Or maybe an audit option??

The User are based on our User Source (AD).

I'm thankful for any idea!