Hi,
Have you completed the Schema and Forest preparation successfully?
If so, please make sure all DCs are up and running.
By the way, the Prepare Schema (Steps 1 and 2), requires Schema Admins credentials for the AD domain to be performed, we can find that out by checking the Active Directory Users
and Computers or running net user <user> /domain
and check if the Schema Admins has the current user as member.
And here I found a similar case could be as the reference:
https://social.technet.microsoft.com/Forums/en-US/bdb0bf9c-835f-4c19-8970-9ce9204e5b97/lyn-server-ee-cannot-see-enabled-user-in-control-pannelgetcsadomain-give-4-wornings?forum=ocssecurity
Kind regards,
Calvin Liu
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