Description:
Disables the mapping of client drives in Terminal Services sessions.
By default, Terminal Services maps client drives automatically upon connection. Mapped drives appear in the session folder tree in Windows Explorer or My Computer in the format \\TSClient\<driveletter>$.
If you enable this setting, client drive mapping is not allowed in Terminal Services sessions.
If you disable this setting, client drive redirection is always allowed.
If you do not configure this setting, client drive redirection is not specified at the Group Policy level. However, an administrator can still disable client drive redirection by using the Terminal Services Configuration tool.