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Jorge Maldonado

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Unable to demote a Windows Server 2008 R2 domain controller

We have a Windows Server 2008 R2 Pro which is a DC but it has been turned off for several months. I just turned it on because we need to demote it and use it later as a normal server, so I ran DCPROMO to start the wizard. I did not check the option "Delete the domain because this server is the last domain controller in the domain" because there are 2 other DC´s . I clicked "Next" and get a message saying "You did not indicate that this Active Directory domain controller is the last domain controller for the domain ´doman.dom´ However, no other Active Directory domain controllers fr that domain can be contacted. Do you want to proceed anyway?"

I clicked "Yes" to proceed anyway and I get the following message:

"The operation failed because: A domain controlled could not be contacted for the domain domain.dom ......."

I will very much appreciate your advice to help me remove any information about this DC.

Respectfully,
Jorge Maldonado
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Avatar of Lee W, MVP
Lee W, MVP
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Lee W is 100% correct you cannot have a DC turned off and you will now have to force remove the DC.

Scott Gorcester (no need to award me any points for this comment)
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Jorge Maldonado

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Thanks for your reply.
I suppose that, after forcing the DC removal, I should use another DC to continue with metadata cleanup. Is this correct?

Best regards.
Yes since it sounds like you have data on that server it may be necessary to build a new server (non-DC) and move the data or applications to it. Then using a healthy DC go ahead and do the metadata cleanup. If you require a third DC then you can introduce that after you have cleaned up the metadata.

Scott
I found this interesting information about metadata cleanup. Have you heard about it? It looks like an "automatic" way of performing the process. I am going to give it a try.

https://technet.microsoft.com/en-us/library/cc816907(v=ws.10).aspx

Regards.
I successfully solved my issue.
Thanks for your support.