title: Vs2012 Unable to connect to Nuget with a proxy
body: <p>I am running Visual Studio 2012 in a VM (windows 7 64bit) and am having trouble getting to Nuget. The username i use on the VM is not the username i use to authenticate through the proxy so my devenv.exe.config file looks like this:</p>
  
  <pre><code>&lt;system.net&gt;
       &lt;defaultProxy useDefaultCredentials="false" enabled="true"&gt;
          &lt;proxy usesystemdefault="True"/&gt;
       &lt;/defaultProxy&gt;
       &lt;settings&gt;
          &lt;servicePointManager expect100Continue="false"/&gt;
          &lt;ipv6 enabled="true"/&gt;
      &lt;/settings&gt;
  &lt;/system.net&gt;
  </code></pre>
  
  <p>Initially when i opened Extensions and Updates i recieved the following message:</p>
  
  <blockquote>
    <p>A connection to the server could not be established because the following error(s) occurred:
    There was no endpoint listening at <a href="http://visualstudiogallery.msdn.microsoft.com/Services/v2011/Extension.svc" rel="nofollow">http://visualstudiogallery.msdn.microsoft.com/Services/v2011/Extension.svc</a> that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.
    Unable to connect to the remote server
    A connection attemp dailed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 65.52.103.91:80</p>
  </blockquote>
  
  <p>After reading several articles I went to Tools -> options -> Environment -> Web Browser and clicked on the Internet Explorer options... button. I then went to connections -> Lan settings and although we use aconfiuration script i added a proxy server and clicked ok.</p>
  
  <p>now the message has changed when going o online Extensions and Updates:</p>
  
  <blockquote>
    <p>A connection to the server could not be established because the following errors(s) occured:
    The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The Authentication header recieved from the server was 'NTLM, Basic realm="Our Proxy Server".
    The remote server returned an error:(401) Unauthorised.</p>
  </blockquote>
  
  <p>So how do i get it to let me use the correct credentials to pass the proxy?</p>