Hello, I have been looking everywhere for some confirmation: Can the OLD domain name be used to join a domain that has been elevated to native mode? We upgraded the PDC to migrate. We got to a point where all NT4 boxes were out of the network and we could switch to native mode, which we did. Several weeks later, one of the techs tells me he can't join the domain and he was using the old domain name from NT4 instead of the new AD domain name. Is this by design or an issue that needs addressing? Best regards, Joseph Parchem