Specific User Cannot Access Cognos

[k2]

Hi All,

Am currently facing a peculiar issue. The Cognos environment operates on Single sign on and Active Directory security.

Whenever a new user is added, users profile will be created in Cognos Administration and the user will be added to the Cognos Active directory group as well. The list of users who are in the Cognos AD group will only be able to access Cognos.

Yesterday I have added an User and created the profile and added to Cognos AD group but only that specific user cannot access Cognos. Not sure why!

In fact I have repeated the process again but no luck. Can anyone please help.

Environment: Cognos 8.4, Windows 2003