I have one Windows XP SP3 pc on the domain that I cannot rdp into. The xp pc is enabled for rdp sessions. Port 3389 is open in the firewall. There are no errors in the event logs. I have tried to rdp from from a number of different machines running different versions of rdp client (5.1 & 7). When I try to rdp from an xp machine it fails without an error message, the connect button simply becomes disabled for a second and then becomes enabled again.
How can I troubleshoot this issue to find out the root cause?
Epilogue: I never did find the root cause....the pc had other faults and was removed offsite.