access to server from win xp workstation problems

[Guest]

I have a Windows 2000 Server which is a Primary Domain Controller (PDC). One of my workstations (Windows XP Pro) Logs in to the server ok, but losses access rights to the server at any moment yielding the error message: "domain_name" is not accesible. You might not have permission.......... you know the rest. When I Log-in and run an application on the server immediately it works, but if left alone or simply not accessing anything on the server for a period of time, then I'm not able to access the server and receive the above error. If I log-off then log-in again, the access rights are restored. I don't restart, just a simple log-off and log-in solves the issue for the moment. The network and NIC are OK because I can ping the server successfully. NO firewalls installed on either machine. I disabled the option to disconect inactive session both on server and workstation. Made sure that both the user and computer (workstation) exist in the domain's active directory. User is also a member of administrators' group, so priviledge shouldn't be a problem

Any ideas what the problem could be?

 

[Dan DeStefano]

is the xp machine sp1a? do you have smb signing enabled on the server? there
is an issue with smb signing in sp1a of wxp. here is the link to the kb
article: http://support.microsoft.com/default.aspx?scid=kb;en-us;329170.

p.s.: remember that there is no such thing as a pdc in w2k ad, just a pdc
emulator. all domain controllers are peers in w2k.

Dan

I have a Windows 2000 Server which is a Primary Domain Controller (PDC).

One of my workstations (Windows XP Pro) Logs in to the server ok, but losses
access rights to the server at any moment yielding the error message:
"domain_name" is not accesible. You might not have permission.......... you
know the rest. When I Log-in and run an application on the server
immediately it works, but if left alone or simply not accessing anything on
the server for a period of time, then I'm not able to access the server and
receive the above error. If I log-off then log-in again, the access rights
are restored. I don't restart, just a simple log-off and log-in solves the
issue for the moment. The network and NIC are OK because I can ping the
server successfully. NO firewalls installed on either machine. I disabled
the option to disconect inactive session both on server and workstation.
Made sure that both the user and computer (workstation) exist in the
domain's active directory. User is also a member of administrators' group,
so priviledge shouldn't be a problem.