In what context are you testing it? THe RK Reg Guide states:
quote:

NoNetConnectDisconnect
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

Data type Range Default value
REG_DWORD 0 | 1 0

Description
Prevents users from using Windows Explorer or My Network Places to map or disconnect network drives.

This entry stores the setting of the Remove "Map Network Drive" and "Disconnect Network Drive" Group Policy. Group Policy adds this entry to the registry with a value of 1 when you enable the policy. If you disable the policy or set it to Not configured, Group Policy deletes the entry from the registry and the system behaves as though the value is 0.

Value Meaning
0 (or not in registry) The policy is disabled or not configured. Users can map and disconnect network drives.
1 The policy is enabled. Users cannot map or disconnect newtork drives.

A value of 1 removes the Map Network Drive and Disconnect Network Drive commands from the toolbar and Tools menus in Windows Explorer and My Network Places and from menus that appear when you right-click the Windows Explorer or My Network Places icons. It also removes the Add Network Place option from My Network Places.

This policy does not prevent users from connecting to another computer, such as by typing the name of a shared folder in the Run dialog box
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