Applies to Three security patches were installed on the following AD server environment CIFS authentication began to fail. This issue persisted until customers un-joined > re-joined the CIFS vserver t...Applies to Three security patches were installed on the following AD server environment CIFS authentication began to fail. This issue persisted until customers un-joined > re-joined the CIFS vserver to this AD domain Unable to connect to NetLogon service on <domain fqdn>(Error: RESULT_ERROR_GENERAL_FAILURE) FAILURE: Unable to make a connection(NetLogon:domain.com), result:6940 vserver cifs check output shows domain status as down Status Details: SecD Error: no server available