Printers that use ports that do not begin with COM, LPT or USB are not redirected in a remote desktop or terminal services session. To force all ports to be redirected, the filtering type has to be changed. This is done in the registry.

Do a Start, Run, type in regedit and press Enter. This starts the Registry Editor.

Navigate to the key: HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default\AddIns\RDPDR.

Right-click in the right pane, choose New, then DWORD value.

Name the value FilterQueueType, press Enter.

Double-click the newly created entry, and set the value to FFFFFFFF, click OK.

Restart the client, log in to your session, and all ports should be r  ...