So today, sometime within the last few hours my servers stopped allowing RDP connections to user accounts. I am getting the error "connection was denied because the user account is not authorized for login"
The domain controllers still allow RDP access to the same accounts. Domain computers still allow RDP access. Domain Admin account still has RDP access to the servers.
Users accounts in question are in the enterprise admin, admin, and remote desktop user groups.
It appears to be isolated to only my non-DC servers, I've been digging through all the GPO settings, and the "Allow users to connect remotely using Remote Desktop Services" Is in a "not configured" state, everywhere.
The only link I can think of is that I have been working on setting up a Direct Access server, which create two GPO's for the clients and the server.