I have a new Server 2016 system that is a DC and will be taking over for an old SBS 2011 server once I have finished the migration. For some reason I can't login as the Administrator account. I can RDP into a server as the administrator but can't login locally. I get the error "The sign in method you're trying to use isn't allowed. I have checked gpedt and logon locally is set to allow all members of the administrator group and there are no deny logon users set. So I don't know why I can't login as the Administrator. I can login as other users that I have set up as administrators just no the Administrator account. Am I missing something?