AD Controller cannot be demoted

I have been trying to demote a Windows 20008 2r Domain Controller and keep getting a failure. The error is:
"Operations which require contacting a FSMO operation master will fail until this condition is
corrected." -and-
"FSMO Role: CN=Infrastructure,DC=DomainDnsZones..."

The server that is named in the error hasn't existed in at least two years and looking at the FSMO roles on the machine I am attempting to demote shows a different server - and one that is available - as having all FSMO roles.

Has anyone else see this and found a way to can get this error cleared up?

Sam GodardAsked:
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Luis MouraCommented:
Check this article

You can do a dcpromo /force, and eventualy need to clean metadata, and use adsedit.

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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Look in AD and delete the non-existing DC.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
You could also seize FSMO roles as it might be held by the non-existing DC.
Sam GodardAuthor Commented:
It took me a couple of read throughs before I caught up. However, once I did the solution you proposed worked as advertised. Thanks
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