If you run NET VIEW on a LAN Manager client and the list of NT workstations and
servers in the domain is not available for several minutes, the problem is due
to the Windows NT broadcast design. To resolve in NT 40: set the * entry in
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters to
1.
For background, see Q127789 – LAN Manager Clients Cannot See Windows NT Computers.