Hi Markus,
yes, thank you. For me wired is the following:
If I enter UID, sAMAccountname, cn or users I do get a valid environment. The test button - see
shows my valid users in the respective group, but I can not log in.
only if I enter UserPrincipalName, the result from the test button is the same (just user@mydomain.tld) and I need to use user@mydomain.tld … I do not get that.
Best regards
Thorsten