I go to "System/Certificate settings", change the following:
CN from "Univention Corporate Server Root CA (ID=uj2OBl27)" to " Corporate Server Root CA (ID=uj2OBl27)"
Email Address from ssl@int..com to ssl@.com
Location Settings from Germany to Austria
(State and Location are detected properly to AT)
Business Unit from "Univention Corporate Server" to "IT"
Then I save and popup says its restarting services.
After that, the installation is bricked, eg. I can see the main webpage, but can not longer logon to the Admin-Page.
Service restart on the console is working.