I have a small office running 2008 r2. This is their only server and is running AD, file and print, DHCP etc. They purchased a line of business application that required thin clients so RDS was added.
It worked perfectly for a couple years but now all of a sudden you can not connect to the server using RDP. The thin clients fail as well as RDP clients. Everything else is working fine, desktop users can still login and access the server, applications on the server work.
There are zero events in the event viewer that have to do with remote desktop services. The only one I found was a vss error for writerName TermServLicensing but I think I resolved that one and I don't think it would prevent logins to rds.
I checked the licensing server and it does have an error that is has zero licenses but we only use five thin clients and five issues licenses so that should be fine.
I have saved and cleared the logs and when I attempt to connect and fail there are no new log entries to show why. Any ideas where I can look for further information on troubleshooting this?