One of our servers mysteriously stopped accepting rdp connection this week. We did apply some updates in December 2012. So I thought the solution provided at http://msitpros.com/?p=1293 would solve our problem. But rdp still didn't work after removing KB2667402.
The server is pingable, and telnet to port 3389 also worked. So, it should not be firewall or network issue.
Are there any other places I should be looking?