Windows 2012 Server -- removing "non-existing" Domain Controllers ?

I found an old Domain Controller that is no longer exist on our network via the attached "Active Directory Sites and Services"

Can I simply right click on the object (SRV-GC2) and delete it ?

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Yes you can delete it if you're sure the server is gone. Make sure that any FSMO roles weren't left hanging though.
Shaun VermaakTechnical SpecialistCommented:
The correct process is a metadata cleanup with NTDSUTIL

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Lee W, MVPTechnology and Business Process AdvisorCommented:
In general, you do not need to remove metadata manually (you did in 2003 and 2000, but this was automated in later versions of Windows).  Still, the automatic deletion isn't complete in my experience.  I have had to look through the DNS manager and delete orphaned entries, remove name servers, check for entries in Sites and Services, and the like.  So I would recommend doing that once you are sure AD believes it should be gone.
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Windows Server 2012

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