Sounds like the secure channel between the file server
and domain is out of synch:
Resetting Domain Member Secure Channel
http://support.microsoft.com/default...b;en-us;175024
In this case if the file server is no longer trusted by the
domain it will check it's local user accounts database
before denying access instead of passing the credentials
to the domain controller for authentication.
"Edward W. Ray" <(E-Mail Removed)> wrote in message
> Recently I got a BSOD on the file server when rebooting from a windows
> patch. Since then, none of my users have been able to access the file
> server. I can only access the file server as a user with admin
privileges
> on the domain. Security event log ID 529 appears in the event log of
the
> file server, denoting unknown user name or bad password whenever I try
to
> log in as a domain user. I can log-on to the domain on my XP clients
no
> problem and access TCP port 445 on all my domain controllers and print
> servers. it is only this machine which has the issue. I seem to
remember
> solving this issue on a Windows 2000 Advanced Server machine about 18
months
> ago, but I cannot find my notes.
>
> This is a Windows 2003 native active directory domain with XP and 2003
> machines.
>
> Anybody remember the solution? I thought it might be buried in
KB823659,
> but I was mistaken?