Forum Discussion

Samuel_Caunt's avatar
Samuel_Caunt
Copper Contributor
Jul 26, 2022

Discovery nTDSDSA Objects with no matching Discovered DC

Hi All,    I recently decommissioned some domain controllers and migrated to them to new servers, however when i demoted one of the DC's it said it had worked however under sites and services the D...
Active Directory
Alban1999's avatar
Alban1999
Iron Contributor
Jul 26, 2022
Hello,

Adding the server back then forcing a decommission wasn't a good idea.
If you have leftover after a migration, first wait for a bit until all logical/physical replication processes are completed - it may take some time, even within small environments.

I guess you already try a metada cleanup ? If yes, then one solution could be manual cleanup using ADSI Edit - but it's risky and you may trigger even more issues instead.
  • Samuel_Caunt's avatar
    Samuel_Caunt
    Copper Contributor
    Jul 27, 2022
    Hi Alban,

    Are there any good guides that would walk me through this process?

    Also i guess my other question is, does leaving in place this cause me any harm?

    Regards
    Sam
    • LainRobertson's avatar
      LainRobertson
      Silver Contributor
      Jul 28, 2022

      Samuel_Caunt 

       

      Given that the object is living within the LostAndFoundConfig container and not in the operational area under Sites, you should be able to see it just fine.

       

      Just make sure you're connecting to the Configuration partition and not the default naming context. That would be the only reason I can think of for not being able to find the object listed in your picture.

       

       

      If you're looking for something official, this is the closest to the money.

       

      Fail to delete orphaned NTDS Settings - Windows Server | Microsoft Docs

       

      Cheers,

      Lain

      • Alban1999's avatar
        Alban1999
        Iron Contributor
        Aug 01, 2022
        Hello Samuel_Caunt,
        LainRobertson replied before me and explained in details how to clean up such items. Thanks to him !
        Anyway I don not think it should trigger issues for day-to-day operations, but it's better to fix it before heavier operations like migrations.

Resources