I have a weird issue. 2 Days ago I started deploying new Domain Controllers on 2012R2 in my 2008R2 environment. I do have 3 2008R2 DCs and now 2 more 2012R2 DCs. All went perfect, Forest and Domain was prepped and upgraded to a new schema. DCs Replicating just fine. All of a sudden some users cannot connect to one of the Terminal Servers. Some still can, others just getting Can't connect message. Remote is enabled on the server, can't connect to name (access10 or access10.domain.com) or IP. Sometimes the connection establishing just fine and server is connected to the Internet, you can ping it. Other TS Servers work just fine, no errors in the event viewer. I found something about SID S-1-18-1 and SID S-1-18-2 but not sure if this having anything to do with my case. Not sure what to check next. I even tried to re-join the TS Server to the domain - no luck. Please advise if you have any idea how to troubleshoot it. I don't see any other reason other than promoting new DCs as it was no other changes.
Server can be pinged, its name resolves from nslookup, I can connect to the server through VMware console - can't see any issues.