A simple explanation how to remove an obsolete DFS namespace server from a Windows 2008/2008r2 Server.

Since Microsoft removed the Support tools with Windows 2008 and replaced them with RSAT, there is no need to install any tools anymore. Just a command and happiness.

dfsutil diag unmapdomroot \<domainname><DFSname> \<DFSrootserver><DFSshare>

Getting an error about:

Could not execute the command successfully
SYSTEM ERROR - The system cannot find the file specified.

See my blog entry about errors removing DFS namespace server