title: IE doesn't follow redirect, gives "Internet Explorer cannot display the webpage"
body: <p>I have a form with a few fields. When you submit the form, the server responds with a redirect (HTTP 302). </p>
  
  <p>When the form is submitted, if there is an <code>&lt;input type=file&gt;</code> field, IE doesn't follow the redirect, but instead gives an error: "Internet Explorer cannot display the webpage".</p>
  
  <p>If there is <em>no</em> <code>&lt;input type=file&gt;</code> field, then it does follow the redirect as expected.</p>
  
  <p>The HTTP 302 Response is <em>exactly</em> the same in both cases, differing only by the timestamp of the response.</p>
  
  <p>I'm experiencing this in IE8 and IE9. (I haven't tried lower versions). Firefox, Chrome, Opera and Safari all follow the redirect as expected.</p>
  
  <p>Notes:</p>
  
  <ul>
  <li>The form has the attribute <code>enctype="multipart/form-data"</code>.</li>
  <li>This is happening over SSL</li>
  <li>The redirect is not to a different protocol, host, or port than the URL the form POSTs to or is hosted on.</li>
  <li>When I inspect HTTP traffic with <a href="http://www.fiddler2.com/fiddler2/" rel="noreferrer">Fiddler2</a>, the issue disappears and IE behaves.</li>
  </ul>