title: NT AUTHORITY\SYSTEM not found
body: <p>I'm trying to add "<code>NT AUTHORITY\SYSTEM</code>" to <code>MSSQL</code> Database, and it fails with error: </p>
  
  <pre><code>Windows NT user or group 'NT AUTHORITY\SYSTEM' not found. Check the name again.
  </code></pre>
  
  <p>Query string: </p>
  
  <pre><code>CREATE LOGIN [NT AUTHORITY\SYSTEM] FROM WINDOWS WITH DEFAULT_LANGUAGE=[us_english]
  </code></pre>
  
  <p>How is it possible not to have this win user ?</p>