title: Sys.WebForms.PageRequestManagerServerErrorException 12031
body: <p>I'm occasionaly getting the following popup from an AJAX.NET application</p>
  
  <pre>Sys.WebForms.PageRequestManagerServerErrorException: An Unknown error occurred while processing the request on the server. The status code returned from the server was: 12031</pre>
  
  <p>From the <a href="http://support.microsoft.com/kb/193625" rel="noreferrer">Microsoft kb</a> that status code indicates a ERROR_INTERNET_CONNECTION_RESET, but it doesn't state what was the underlying issue the triggered the error in the first place.</p>
  
  <p>How can I log/trace/etc the underlying error that generated the popup?</p>