Certain situations, such as server crash or failure of the DCPROMO option, require manual removal of the DC from the system by cleaning up the servers metadata. The following detailed steps will help you accomplish this:

  1. Log in to DC server as Domain/Enterprise administrator and navigate to Server Manager > Tools > Active Directory Users and Computers

  2. Expand the Domain > Domain Controllers

    meta1 
  3. Right click on the Domain Controller you need to manually remove and click Delete

    Manually-Removing-A-Domain-Controller-Windows-Server-2.png

     

     

  4. Click Yes to confirm within the Active Directory Domain Services dialog box

    Manually-Removing-A-Domain-Controller-Windows-Server-3.png

     

  5. In next dialog box, select This Domain Controller is permanently offline and can no longer be demoted using the Active Directory Domain Services Installation Wizard (DCPROMO) and click Delete

    Manually-Removing-A-Domain-Controller-Windows-Server-4.png

     

     

  6. If the domain controller is global catalog server, in next window click Yes to continue with deletion
     
  7. If the domain controller holds any FSMO roles in next window, click Ok to move them to the domain controller which is available
  8. Go to Server manager > Tools > Active Directory Sites and Services

  9. Expand the Sites and go to the server which need to remove
     
  10. Right click on the server you which to remove and click Delete

    Manually-Removing-A-Domain-Controller-Windows-Server-5.png

     

     

  11. Click Yes to confirm

    Manually-Removing-A-Domain-Controller-Windows-Server-6.png

     

  12. Right Click on Start > Command Prompt (admin)
     
  13. Type ntdsutil and enter

    Manually-Removing-A-Domain-Controller-Windows-Server-7.png

     

  14. You are then presented with the metadata cleanup prompt
    meta8
     

  15. Next type remove selected server <servername>
    NOTE: Replace <servername> with domain Controller server you wish to remove

    Manually-Removing-A-Domain-Controller-Windows-Server-9.png

     

  16. Click Yes to proceed when presented with the warning window 

     

  17. Execute the quit command twice to exit out of the console

NOTE: This post was originally posted on CANITPRO.NET and was co-authored by Microsoft MVP Dishan Francis