title: Cannot use the special principal 'sa'
body: <p>When I try to run the command:</p>
  
  <pre><code>EXEC master..sp_addsrvrolemember @loginame = N'sa', @rolename = N'serveradmin'
  GO
  </code></pre>
  
  <p>I get the error:</p>
  
  <blockquote>
    <p>Msg 15405, Level 11, State 1, Procedure sp_addsrvrolemember, Line 45
    Cannot use the special principal 'sa'.</p>
  </blockquote>
  
  <p>Ideas/suggestions welcome.</p>