At work we have two Windows Server 2003 computers. One of them configured as domain controller, dns server and file server ("production" server). There are 5 workstations connected to this domain.
A few days ago we setup a test server (which in the end will be for one of our clients) running Windows Server 2003 R2 Enterprise Edition Service Pack 2.
This one is configured as a workgroup, with dns server and file server.
For testing purposes we have configured some of our workstations to point to the test server's dns (still being joined to the other server's domain) and test it's performance
The problem we are having is that at random times, when we try to access the shares on the test server, a logon window pops up and sometimes it doesn't.
We have enabled the Guest account on the test server, and configured the shares permissions so that the guest account has read/write access (this way workstations are not prompted for credentials when accessing shares, theorically).
This happens with computers that are joined to the "production" server domain. It does not happen with computers that are setup as workgroup.
I don't know if it's coincidence or not but this erratic problem started happening after we installed NOD32 Antivirus (V4 Bussiness Edition) on the test server.
Can anyone point me on the right direction about this issue?.
Any help is greatly appreciated.