Forum Discussion
ADFS - Unable to log on with UPN
Hi All, In our development environment we have ADFS 3.0 servers authenticating federated users. Recently, users have been unable to log on using their UPN. SamAaccountName works without issue. Fo...
Can you elaborate a little Vasil? The authentication fails completely and claims are not released. The ADFS forms authentication page just rejects the password unless you use the samaccountname format. our production environment is essentially the same and we dont have a similar issue so its quite puzzling.
Right, seems I've misunderstood the issue then. Your first post listed an "token validation error" event, which is generally generated *after* the user has successfully logon to the AD FS server. If the user is not even able to pass the login prompt, I'd suggest checking the event logs for any 4625/4624 entries related to that user and more specifically looking at the netlogon error ("status") therein.
