Hi Marc,
Just to confirm: the workstation's DNS is set to the IP of the server only, correct?
Now: is the time on the server the same as on the workstation? They need to be within 5 minutes of each other.
Also: has this update been installed?
http://support.microsoft.com/kb/948496/ 4th item down in symptoms is "unable to join workstations to the domain"
are you trying to join the domain with the full domain name eg: domain.local?
if this is happening for all machines you are trying to add, please download the Windows 2003 SP1 Support tools from
http://www.microsoft.com/downloads/details.aspx?FamilyId=6EC50B78-8BE1-4E81-B3BE-4E7AC4F0912DRun the installer, open the command line and run dcdiag
This will check your server for proper Domain controler operation. Please review the output for any errors, and let me know.
Regards,
Dave