After a power down for electrical work our DNS is no longer responding or
responding slowly. When the servers were brought back up they show that DNS is
running and I have view the DNS council but they will not respond to requests.
Everything was working fine prior to the shut down.
I have 2 servers, Server 2012 that are both serving AD, DNS, and DHCP. Both
servers are up and working. I do have a error in the DNS service, "The DNS
server has encounter a critical error from the Active Directory. Check that the
Active Directory is functioning properly. The extended error debug information
(which may be empty) is "". The even contains the error.
Also checked AD and everything looks as it should as well.
Any help on this would be great.
Are there any errors of AD? I'm afraid the server may become unstable after the
power down. We could contact the vendor to test the hardware.
To verify the cause of the problem, we could perform a network capture.
Install Network Monitor on DNS server and start a new capture. Make a query from
client. We could check when the packets reach server and when the response is
sent. If there is a delay between the client and server, we need to check the
Here is the guide for Network Monitor:
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