title: how to fix Windows NT user or group 'IIS APPPOOL\DefaultAppPool' not found?
body: <p>when I run on sql server 2005:</p>
  
  <pre><code>EXEC sp_grantlogin "IIS APPPOOL\DefaultAppPool"
  </code></pre>
  
  <p>I get the error:</p>
  
  <pre><code>Msg 15401, Level 11, State 1, Procedure sp_grantlogin, Line 49
  Windows NT user or group 'IIS APPPOOL\DefaultAppPool' not found. Check the name again.
  </code></pre>
  
  <p>How can I fix this?</p>