title: WPF WebBrowser control seems to use proxy (fiddler) but no one is configured
body: <p>Yesterday I just added a WPF WebBrowser control to a newly from scratch created WPF application. But invoking the Navigate method with "<a href="http://www.google.de" rel="nofollow">http://www.google.de</a>" for example leads to a "Navigation Canceled" error message in the control. First I completely disabled my firewall but nothing changed. I checked the IE internet options for an orphaned proxy configuration but there was not proxy configured. After an hour or so I started the HTTP proxy tool fiddler to check if the HTTP request reaches fiddler or if the request fails before reaching it. And surprise: the request reaches fiddler and the web site gets opened. I double and quadruple checked all proxy settings I am aware of:</p>
  
  <ul>
  <li>IE internet options again (no proxy settings found!)</li>
  <li>machine.config for all installed .NET framework versions in 32 and 64 bit (no proxy settings found!)</li>
  <li>disabling the proxy in the app.config I especially added right now to my WPF application (nothing happened)</li>
  </ul>
  
  <p>A newly created console application using WebClient.DownloadString works! So I think it is not a problem of a globally misconfigured .NET Framework. All other installed browsers like IE, Firefox, Chrome and so on does work WITHOUT fiddler started!</p>
  
  <p>To be completely sure that no proxy is enabled for my process I have read the Internet Options from registry from my WPF application process but ProxyServer/ProxyEnabled are not set:</p>
  
  <ul>
  <li>[CU]\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings</li>
  <li>[CU]\Software\Microsoft\Windows\CurrentVersion\Internet Settings</li>
  <li>[LM]\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings</li>
  <li>[LM]\Software\Microsoft\Windows\CurrentVersion\Internet Settings</li>
  </ul>
  
  <p>Please help me! I am completely stumped!</p>
  
  <p>Greetings from Germany,</p>
  
  <p>Tobias</p>