title: Silverlight Requests, Failures & Fiddler
body: <p>I've got a Silverlight application that makes a cross-domain request. The clientaccesspolicy.xml file exists on the server I am making a request to and is correctly configured. </p>
  
  <p>I know that it is correctly configured because when I use the application to make a request from <strong><em>my machine</em></strong> I receive a response with no problem.</p>
  
  <p>When a second individual on a corporate network about 300 miles away tries to use the same application, launched from the same URL, to make the same request, he instead gets a security exception.</p>
  
  <p>Here's the odd part. I requested that he download Fiddler so that I could see the request and it's response, and thereby gain some insight into the problem, but when he runs the app with Fiddler open, the request succeeds. </p>
  
  <p>This happens in both Chrome and IE. With Fiddler everything is fine. Without it, it doesn't work.</p>
  
  <p>We've tried clearing his history, deleting the Silverlight app from the cache, everything I can think of.</p>
  
  <p>The request is being made to a private network (which he is on), I make the request through a VPN connection to that network (in case for some reason that matters).</p>
  
  <p>Any thoughts as to what's causing this bizarre problem?</p>