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Windows Thread, Corrupt Domain Controller in Technical; You will need to look at some NTDSUTIL guides to do the necessary clean up. Google something like ntdsutil remove ...
  1. #16
    ChrisH's Avatar
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    You will need to look at some NTDSUTIL guides to do the necessary clean up. Google something like
    ntdsutil remove a dead dc

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    Quote Originally Posted by FN-GM View Post
    are you doing that on a good DC?
    No, I'm following this guide on the faulty server.

    How to remove data in Active Directory after an unsuccessful domain controller demotion

    Should I follow these steps on a good DC to remove all entries to the failed DC?

    When the faulty DC is removed from the network it's taking the clients ages to log on but only partially runs the GP - they get some settings but are getting access to the C drive.

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    Yep, you want all references to that server gone from the domain.

    Microsoft best practice then states that the server that's been removed would make a good paperweight, but should never be brought back onto the domain. If you are going to then make sure all traces are gone before doing so, a complete reformat and rebuild's your best bet.

  4. #19

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    Quote Originally Posted by ChrisH View Post
    You are potentially risking messing up your whole AD if its spewing out crap.
    I don't think you are at risk. AD is pretty good at not replicating "bad" data - @gibbo's comments about changes made on this DC not replicating to other DCs tends to confirm this.

    Having said that, you might as well leave the machine disconnected. You can use dcpromo /forceremoval so that it will stop being a DC; you then just run ntdsutil - this is a good description of what to do.

  5. #20
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    Thanks for all your help guys. I've manually removed the faulty DC from the domain with KB216498, and removed all entries in DNS and DHCP relating to it.

    I've shut down and restarted a number of random client PCs around school and so far they've logged on ok - no delays and picking up the two "good" DCs.

    The real test will be Monday morning when everyone logs on!

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    use NTDS Util to manually remove DC form yr forest. Part of the SVR install. Once removed I would do a clean install and let yr DC update through replication. I'm assuming that all yr DC's have high speed link between them (1GBPS)

    Use NTD Util to comfirm if all enteries for the corrput DC have been reomved, check yr svr locator records too.



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