troubleshooting Question

DCPROMO Failed to Demote a DC

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Nick DanielsFlag for United States of America asked on
Active DirectoryDNSWindows Server 2008
12 Comments1 Solution8614 ViewsLast Modified:
We stood up a Domain Controller on a virtual (hyper-V) Windows Server 2008 R2 Enterprise  edition Server for the purpose of installing Exchange 2010.  We installed Exchange and doing so made some mistakes.  We had to uninstall exchange from it.  I created a new VM to put exchange on correctly.  Now that Exchange is removed from that old DC, I want to remove AD from it and shut it down permanently.  The problem is that it won't go down without a fight.

The old server I want to demote is "" and it is also a DNS Server
The primary DC is "" and it is also a DNS Server

This is the error I get when I try to remove AD:

When attempting to remove AD using DCPROMO I get this error: "The operation failed because: the attempt at remote directory server to remove directory server CN=Exchange1,CN=Servers,CN=mydomain,CN=Sites,CN=Configuration...
was unsuccessful. "Access is denied"

I have tried several different Domain Admin accounts and made sure that they were also
Enterprise Admins.  Exchange1 can ping the primary domain controller.  It is also a global catalog.  To prove there wasn't some problem with the domain in general, I stood up another Test DC as global catalog and demoted it without any problems (without making it a DNS server).

What do the experts think I should do next?
Thanks in advance!
Venugopal N

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