If you receive the subject message and the Event log contains:
<b>
   Event ID: 5719
   Source: Net Logon Type error
   Description: No Windows NT domain controller is available for domain
                <domain name>. The following error occurred:

                There are currently no logon servers available to service
                the logon request.</b>
verify that the following registry entries exist:

Windows NT 4.0 Workstation

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Browser\Parameters

MaintainServerList    with a value of No

IsDomainMaster        with a value of False


Windows NT 4.0 Server

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Browser\Parameters

MaintainServerList    with a value of Yes

IsDomainMaster        with a value of True


If after restarting, you don't receive the error message, you could set MaintainServerList to Auto.

Note: Event Id 5719 is normal if you boot with a no network card hardware profile.