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Restore DC to DFSR-GlobalSettings

    Question

  • Hello,

    I have deleted one of the DCs from Dfsr-globalsettings -> Domain system volume-> Topology. which was obviously a stupid thing to do. Is there a way to add DC back? I have looked at adsi edit and saw entry still exists there under DC but I cannot see the entry in 'Active Directory users and computers' anymore, nor in dfs management under domain system volume.

    As a result it does not proper replicate domain system attributes to the deleted DC.


    MK

    Tuesday, April 4, 2017 4:25 PM

All replies

  • Hi

     The proper way,will perform metadata cleanup to remove this orphaned dc from domain,then clean installation of OS and promote as domain controller again.

    Metadata cleanup;https://technet.microsoft.com/en-us/library/cc816907(v=ws.10).aspx?f=255&mspperror=-2147217396


    This posting is provided AS IS with no warranties or guarantees,and confers no rights. Best regards Burak Uğur

    Tuesday, April 4, 2017 5:36 PM
  • this would be the last resort for me to demote  and promote back.. I was actually able to add it back via adsi edit using this microsoft topic: https://support.microsoft.com/en-gb/help/312862/recovering-missing-frs-objects-and-frs-attributes-in-active-directory

    the only issue that is left when I run dcdiag I get : "There are warning or error events within the last 24 hours after the SYSVOL has been shared.  Failing SYSVOL replication problems may cause
    Group Policy problems." and under DFS Management -> Replication -> Domain System Volume I can see that AD is there now but 'Local Path' parameter is not there.. Not sure if it would be possible to update it? 

    Please see picture attached


    MK

    Wednesday, April 5, 2017 1:10 PM
  • Hi,
    Agree with Burak that you could re-promote that server as the DC again.
    After restoring the DC, you could follow the similar thread for restoring DFSR after Domain controller recovery:
    https://social.technet.microsoft.com/Forums/windows/en-US/ebea374d-a786-4f27-ad03-647f76083870/how-to-restore-dfs-distributed-file-system-replication-after-domain-controller-recovery?forum=winserverDS
    and for the error in the screenshot, you could have a try rebuilding SYSVOL to see if it helps.
    Restoring and Rebuilding SYSVOL
    https://technet.microsoft.com/en-us/library/cc816596(v=ws.10).aspx
    http://kpytko.pl/active-directory-domain-services/authoritative-sysvol-restore-dfs-r/
    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
    Best regards, 
    Wendy

    Please remember to mark the replies as answers if they help.
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    Thursday, April 6, 2017 5:48 AM
    Moderator