LDAP error

Hi

I have run dcdiags on a server running SBS 2000.

The program reported:

LDAP connection failed with error 1231.

Does anyone know what this means?

I ran dcdiag because I cannot access the Active Directory users and computers snap-in (error message: naming information cannot be located because: The network path was not found). I have checked the IP address, and the dns service is started and working.