title: Unable to find User after specifying a container for PrincipalContext
body: <p>I'm attempting to find a User by username in Active Directory.</p>
  
  <p>This works:</p>
  
  <pre><code>const string Domain = "SLO1.Foo.Bar.biz";
  const string Username = "sanderso";
  
  PrincipalContext principalContext = new PrincipalContext(ContextType.Domain, Domain);
  UserPrincipal userPrincipal = UserPrincipal.FindByIdentity(principalContext,  Username);
  </code></pre>
  
  <p>This does not:</p>
  
  <pre><code>const string Domain = "SLO1.Foo.Bar.biz";
  const string Container = "CN=Users,DC=SLO1,DC=Foo,DC=Bar,DC=biz";
  const string Username = "sanderso";
  
  PrincipalContext principalContext = new PrincipalContext(ContextType.Domain, Domain, Container);
  UserPrincipal userPrincipal = UserPrincipal.FindByIdentity(principalContext, Username);
  </code></pre>
  
  <p>I receive the error message: </p>
  
  <blockquote>
    <p>There is no such object on the server.</p>
  </blockquote>
  
  <p>here's a screenshot of my ActiveDirectory setup:</p>
  
  <p><img src="https://i.stack.imgur.com/4EcYV.png" alt="enter image description here"></p>
  
  <p>I've also tried using the following Container:</p>
  
  <pre><code>const string Container = "OU=Users,DC=SLO1,DC=Foo,DC=Bar,DC=biz";
  </code></pre>
  
  <p>this was equally unsuccessful. </p>
  
  <p>How can I specify my container while accessing the 'Users' container? I'm trying to do this as an initial, simple setup before introducing a lookup with more complicated requirements. So, I'd rather not settle for the simple solution because I am going to have to troubleshoot this anyway, I believe.</p>