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Unable to remove DFS namespace server, error: The namespace cannot be detected

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Hello,

I was attempting to configure the servers in my domain-based DFS namespace to use full qualified domain names. I have four namespace servers, one running Windows Server 2012 R2, the others running Windows Server 2008 R2. The namespace runs in Windows Server 2000 mode. I updated the 2012 server using 'Set-DfsnServerConfiguration'. I ran into a problem with the first of the 2008 R2 servers. I ran the command:

Dfsutil.exe server registry dfsdnsconfig set <servername fqdn>

And removed and re-added the namespace server using the DFS Management GUI. The namespace server appeared in its NetBIOS format so I restarted the DFS services but this had no effect. I then foundhttps://support.microsoft.com/kb/244380 and tried following the recommended steps. I tried to remove the namespace server once again, this time I saw the warning:

The namespace <namespace share> on <servername> cannot be detected. The system cannot find the file specified. Do you want to forcibly remove the namespace server?

At this point, I'm a little lost - I can see the root share still exists on the problem namespace server (both in c:\dfsroots and when performing a 'net view'). The problem server appears in the 'remoteServerName' attribute in the DFS-Configuration container in ADSIEDIT. The root share no longer has an entry in the registry (under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DFS\Roots\Domain) although, if I import this from another namespace server and then try to remove the namespace server, I still see the same error.

Any suggestions would be appreciated!



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