Hello everybody,
we have a problem with the authentication in OSDFrontend with our Users from child domain. Under our doman are many child domains and we would like a central group to put our "OSD Admins" in.

It is a universal security group with members from the child domains, these members could not authenticate in OSDFrontend.

There are no errors in the Event Log "ConfigMgr Web Service Activity".
The "OSDFrondEnd.log" return the following error message:

I have already done some research, it seems that in general the cmdlet "GetADGroupMemberByUser" does not work for child domains. I've also tried to create a group with the same name in the child domain, but this does not work either.
Is there anything else I can check or is there a way to fix this? Thank you in advance.