Printers that use ports that do not begin with COM, LPT, or USB are not redirected in a remote desktop or a terminal services session

When you use remote desktop to connect to a terminal server, certain types of printers are not automatically connected to the terminal server session.

Follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following key in the registry: HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default\AddIns\RDPDR
3. On the Edit menu, point to New, and then click DWORD Value.
4. Type FilterQueueType, and then press ENTER.
5. On the Edit menu, click Modify.
6. Type FFFFFFFF, and then click OK.
7. Close the Registry Editor.
8. Restart your computer.

This enables all ports on the client to be redirected.

For more information, refer to the following Microsoft support article:-

http://support.microsoft.com/kb/302361#LetMeFixItMyselfAlways

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