Workgroup or domain members can be hidden from Network Neighborhood. It makes
for a abbreviated display if there are no servers you want to browse to using
Network Neighborhood. It does not disable access, only Network Neighborhood
listing.
Hive: HKEY_CURRENT_USER
Key:
Software\Microsoft\Windows\CurrentVersion\Policies\Network
Name:
NoWorkgroupContents
Type: REG_DWORD
Value: 1