windows 2003 event id: 4521

Hi,

anyone know how to solve the below error log ?

The DNS server encountered error 9002 attempting to load zone . from Active Directory. The DNS server will attempt to load this zone again on the next timeout cycle. This can be caused by high Active Directory load and may be a transient condition.

Hi,

Does this occur multiple times or one time only?

See:
Event ID 4521 — DNS Server Active Directory Integration

Event ID 4521 Source DNS

If multiple times, please provide some more infos about the servers OS with SP/ptach level and installed roles and how the domain is built(single forest/domain, amount of sites, etc.).

__________________
Shaalini.S
Be the Best of Whatever you are...

Hi,

server 2003 stand edition with sp2, that is one of the PDC, i have another DC act as secondary DC, this error log 4521 keep coming out

Hi all,

To prevent the event ID 4521 occuring on all the domain controllers, we may need to delete the DomainDNSZones partition from the Active Directory. Meanwhile, please make sure we don't have any zones under that Partition, otherwise the zones will also be deleted.


Please backup the domain controller before delete the DomainDNSZones.


Backing Up Domain Controllers
Backing Up Domain Controllers


Then you may refer to the following steps to delet the DomainDNSZones


How to Delete the DomainDNSZones
Create or delete an application directory partition: Active Directory


Please Note: Please do not create another partition with the same name until the servers which hold this partition have had an opportunity to remove it. This will occur when knowledge of the deletion of this partition has replicated throughout the forest, and the servers which hold the partition have removed all the objects within that partition.


After the DomainDNSzones parition was removed from the Active directory. Let it replicate on all the domain controller.


Then run the following command.


net stop dns

net stop netlogon

ipconfig/flushdns

net start dns

net start netlogon

ipconfig/registerdns


Reboot the DC after that.


Then, please check if there will be any event ID 4521 re-occur on the domain controllers.

Hope it helps.

__________________
A.Rajesh Khanna

If multiple times, please provide some more infos about the servers OS with SP/ptach level and installed roles and how the domain
is built(single forest/domain, amount of sites, etc.).