Identity Management (IdM) clients that are views-enabled are unconditionally looking for a views-related attribute. If the attribute was not available, earlier versions of IdM returned a different error code than later versions, which was not handled as expected on the client side. Consequently, Active Directory (AD) user's group membership resolution failed, as the lookup request failed after not being able to dereference the view name. To fix this bug, if the LDAP_UNAVAILABLE_CRITICAL_EXTENSION(12) or LDAP_PROTOCOL_ERROR(2) error is returned, the error is ignored and the client assumes the server is not views-aware. As a result, AD user's group membership resolution no longer fails when a Red Hat Enterprise Linux 7 client is enrolled to a Red Hat Enterprise Linux 6 server.