Another little problem that popped up at work recently is that users connecting via RDP to a certain machine couldn't copy and paste between the two machines. The problem here was that the rdpclip.exe was not loading when the session was started. On further investigation, you could not even start the process manually. The reason for this was because the Clipboard Mapping option had been disabled on the server.

To resolve this proceed as follows:

1. Log into the TS (on an account that has administrator rights)
2. Run the Terminal Services Configuration program
3. Select the Connections folder (under Terminal Services Configuration on the left window pane)
4. Right-click on the RDP-tcp connection (in the right window pane) and select Properties.
5. Click the Client Setting tab
6. Un-tick the Clipboard Mapping option under the Disable the following: heading.

You will then have to log off the server and then back on to be able to copy and paste. This applies to any users that were connected to the server when the changes were made.