Re: Kerberos not being used, only NTLM - Login failed for user '(null)'
From: Ken Schaefer (kenREMOVE_at_THISadOpenStatic.com)
Date: Thu, 23 Sep 2004 12:18:06 +1000
See responses in microsoft.public.inetserver.iis.security
"DougM" <firstname.lastname@example.org> wrote in message
> We have a Win2K3 Server running an ASP .NET application that connects
> to a Win2K3 server running SQL 2000 on the backend.
> Whenever a user opens the application page in their client browser
> they get the error message:
> "The following error occurred whilst loading the page: Login failed
> for user '(null)'. Reason: Not associated with a trusted SQL Server
> We have been through all the newsgroups, the Microsoft
> "Troubleshooting Kerberos Delegation" whitepaper, the Microsoft
> "Troubleshooting Kerberos Errors" whitepaper and it appears as though
> Kerberos has been turned off for IIS on this middle tier server. When
> a client connects it doesn't even attempt Kerberos authentication but
> immediately authenticates with NTLM, which explains the login failure
> for user '(null)' error. What we can't work out is why Kerberos isn't
> even attempted.
> Thanks in advance,