The logon credentials are being cached locally in the
event a DC cannot be found. Remove cached logon
credentials:
Cached domain logon information
http://support.microsoft.com/kb/172931/en-us

"Tiago" <Tiago@discussions.microsoft.com> wrote in message news:
>I have three computers on home, an one of them as Windows NT 4.0 Server
> installed, and the other two have the Windows XP Professional with SP2,
> and a
> create Global accounts on Windows NT 4.0 Server, but when i disconnect lan
> cable the both PC's log on without the Server verification, how can i
> block
> the log on when the lan cable is disconnect?How can i do for the other 2
> PCs
> log on only when they are connected to the Windows NT 4.0?
>