The DNS server was unable to complete directory service enumeration of zone {0}. This DNS server is configured to use information ...

The DNS server was unable to complete directory service enumeration of zone {0}.  This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it.  Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is "{1}". The event data contains the error.