The DNS server was unable to complete directory service enumeration of zone %1. 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 “%2”. The event data contains the error.

Details
Product:	Windows Operating System
Event ID:	4004
Source:	DNS
Version:	5.2
Symbolic Name:	DNS_EVENT_DS_ZONE_ENUM_FAILED
Message:	The DNS server was unable to complete directory service enumeration of zone %1. 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 “%2”. The event data contains the error.

Explanation
The DNS Server service uses Active Directory to store DNS data, and it encountered a Lightweight Directory Access Protocol (LDAP) error while querying the directory. This error could be caused by either a high load on the domain controller or the failure of other domain controller services.

User Action
If this message appears repeatedly, restart the DNS Server service, and then look in the event log for other events occurring at the same time that could be causing this problem. For more information about DNS and DNS troubleshooting procedures, see Domain Name System(DNS)Center .