Unable to rename domain controller: Account already exists

Hi everyone

I seen an interesting bug yesterday, it was about Windows Server 2019 and a error when you try to rename a new domain controller to the old name of a retiered’s one;

The error Windows was giving was:

The account already exists.

The culprit into that case was a left over that was visible in ADSI Edit. The exact location was;

Configuration -> CN=Sites -> CN=Default-First-Site-Name -> CN=Servers -> CN={Old Domain Controller}.


As simple as that, but it need a bit of playing in ADSI Edit 🙂



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