Parent Domain is Deleting Itself

  • Thread starter Thread starter Guest
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G

Guest

Hello

I have a Parent / Child domain structure in production. I removed half
of the mirrored drive set from each of a parent, and a child domain
Controller, and installed them into other servers of the same type in a POC
Lab environment.

Once the two domain controllers appeared to be functioning properly, I
DCPROMO'd up both a new Child DC, and a new Parent DC. Once they appeared to
be functioning properly, I DCPROMO'd down the two original domain controllers
that I had imported from production. I had to create some manual
Replication Connections to get things going, but other than that, things
seemed to be functioning OK

Everything seemed fine for almost a week, or more, and then I started
noticing that I was getting some strange behaviour from DNS.Name resolution
started failing in completely inexplicable ways.

After looking into things more closely, I realized that the parent
domain has been deleting itself from Active Directory!!! I have event log
messages saying that the parent partition was successfully been deleted from
the Directory. When I run Repadmin /showreps, I can see that the Parent
Partition has dissappeared from all of the child Domain Controllers, and is
only running in a dinished state on the the parent itself. I can still log
into the Parent Domain, but I suspect that by tomorrow, the may cease to be
available completely.

The only remaining Parent DC says on the surface that it is a member of
the Parent Domain, but under the surface the tools are telling me that it
actually thinks it is a member of the Child Domain!!

Has anyone ever seen anything like this happen before??? If yes,
please help!!!

Thanks in advance

Steve
 
Hi Steve,

To find out the problem in your environment I advise you to run dcdiag /v >
dcdiag.log in all domain controllers as well as netdiag /v /l. With both
command try to identify how many domain controllers and domains are working.

If you realize you lost all domain controllers from the root domain I hope
you have a good backup from system state.

Use the system state to restore a domain controller on a root domain.
 
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