after installation and configuring cognos 10.1.1, launched the url . we have 2 namespace. it allows to select one namespace.then it throws error "CAM-AAA-0056 UNABLE TO AUTHENTICATE" Bad search filter"
What are you using for authentication?
Can you successfully test to your authentication source?
To test, perform these steps:
From Cognos Configration->Security->Authentication->Your LDAP
You might try this solution to resolve the issue:
http://www-304.ibm.com/support/docview.wss?uid=swg21346342