Hi @sathyavikasini ,

Are you still facing this issue? While creating the agent, do you see that your configured knowledge sources are processing?

If you haven't done so already, you might check permissions on the catalog/schema/volume(s) that are configured as knowledge sources. Also, the 401 credential errors have occurred with other workloads when account admins enable admin isolation flags, so that's another thing to check if you're still running into the timeout error. 

-James