title: Can't manage DFS namespace after retiring namespace server
body: <p>In DFS Management, when we try to manage one of the namespaces, the error is:</p>
  <blockquote>
  <p>\\mydomain.com\mynamespace: The namespace cannot be queried. The specified domain either does not exist or could not be contacted.</p>
  </blockquote>
  <p>When I use <code>dfsdiag /testdfsintegrity /dfsroot:\\mydomain.com\mynamespace</code>, the output is:</p>
  <pre><code>Error: The RPC server is unavailable.
  Error: The specified domain either does not exist or could not be contacted.
  Warning: Unable to access the DFS metadata for the following namespace: \\myserver\mynamespace
  Finished TestDfsIntegrity.
  </code></pre>
  <p>We retired <em>myserver</em> within the last few months. I speculate that it was the only namespace server for this namespace. I can still browse this namespace in file explorer; I just can't manage it in DFS Management.</p>
  <p>Is there a way to set up another server to be the namespace server for this namespace?</p>