I have a couple workstations on my internal domain where I can not establish a remote desktop connection. When I try to connect to these workstations, I get a "Remote Desk can't connect to the remote computer for one of these reasons:" error.
This is what I have done to try to resolve the issue:
1) Verified that the remote user does have permissions to connect to the workstation
2) Turned off the firewall (we are using F-Secure)
3) Stopped all the F-Secure services
4) Tried to telnet the port "3389", no connection should be established
So it appears that port "3389" is still being blocked somehow. What is the best way to figure out what is blocking that port on the desktop?