Use this simple registry modification to make it happen:
Disclaimer: Don't mess up your registry, or you will hose your server!!! This is a blog, not a support service, so if you follow my advice here you do so at your own risk!!! That being said....
- Make a remote network registry connection to the server you need to enable it on.
- Once connected, browse the remote machine's registry and find the following key: HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server
- In there, find the following value: fDenyTSConnections.
- Double click it to edit the value, and change the setting from 1 to 0.
- Disconnect from the remote registry and close regedit.
- You should now be able to successfully connect to the server in a Remote Desktop connection!
And with that simple change you can save the long walk into the server room, or the embarrassment of having to call someone at the remote location - again...