@enirys  - Can you confirm the value you have set for user.inactivity.timeout.default, user.inactivity.timeout.role.readonly.default - Can you share the complete 401 error users are experiencing?   - Can you confirm if you have spnego authentication enabled for ambari?   - Attach the below logs after 401 error occurs in ambari UI 1. ambari.properties file 2. ambari-audit.log 3. ambari-server.log   ... View more