title: Javascript: access denied when access iframe with "about:blank" source
body: <p>We are seeing the issue on a customer's machine: a "Access Denied" error Randomly show up when the JS code try to access an iframe content by using:</p>
  
  <pre><code>var frameContents = $('#IFRAME2').contents();    
  </code></pre>
  
  <p>According to our customer's steps, I'm sure that at that time, the src of the iframe is still "about:Blank" like it was set by default:</p>
  
  <pre><code>&lt;iframe id="IFRAME2" src="about:blank" style="width: 100%;"&gt;&lt;/iframe&gt;    
  </code></pre>
  
  <p>Since this is a "Sometimes" issue and does not happen on all of the machines, we could not reproduce it on our lab and don't know how to fix it properly.</p>
  
  <p>My question: What can cause this issue? Any idea to fix it?</p>
  
  <p>Update: My customer said that they didn't see the issue until they upgrade their IE from 8 to 11. OS is windows 7 SP1 French.</p>