We have three Windows 7 machines in the office that are dedicated to Remote Desktop for all office staff. As of the last 2 weeks, two of the three machines have been increasingly denying RDP login to domain users, presenting the following message: Your credentials did not work
. (See the image below.) Some details:
I'm seeing no evidence of the failed logins in the Security Log or System Log on the RDP machines.
Domain administrators are affected less with the failed login than users who are simply Local Administrators on the RDP machines, but periodically they see the failed login as well. All domain user accounts that fail to login to RDP machines 1 and 2 can login without issue on the third RDP machine.
This detail is bizarre: If I use the office server as an RDP client with any domain user account, the login simply works. Additionally, if I successfully login using the server as a client for User X, then I can resume using other machines in the office as clients for User X (client machines that had previously failed to login with User X.). It's as if the server RDP login "cleans the pipes" for User X.