I have a user who logs in from four different laptops to his WIndows 7 desktop. We recently upgraded the domain controller for his office to Server 2012. Ever since we did so, he's been experiencing regular lockouts (to his desktop computer running Windows 7 Pro) after logging into one or the other of the computers. The laptops are not all running the same OS. One is 7 Pro, one is 7 Home Premium, one is 7 Home, and the other is Windows 10 (Home, I think).
We have not yet established a pattern for what logins will lock him out. Credentials for RDP are saved, and we know they're correct. I re-entered them and tWe're not sure there is one. We suspect there's something in Server 2012 that, by default will not allow logins from multiple computers. NONE are simultaneous login. He's trying to use the same domain account and password on all four laptops. Whether he exits Windows ungraciously, or logs out properly he might still experience a lockout to the workstation on a 2012 domain.
Anyone have any idea?