SYMPTOM:
While configuring intelligence server to the metadata, on Strategy Authentication page, if the credential of a user without administrative privileges is input, although it is correct, error message "Error obtaining a server session" appears, as shown below.

Error obtaining a server session: (Object with ID '6E5881E3000000000354F44000000000' and type 33 (ServerDef) is not found in metadata. It may have been deleted.)