title: Cannot sync with gradle behind proxy, site is not blocked, opens from browser
body: <p>I am trying to open a project (developed in a different machine) with my newly installed <code>android studio 2.3</code>. The studio was downloading <code>gradle-2.1.2.pom</code> but threw the following error:</p>
  
  <blockquote>
    <p>Could not GET
    '<a href="https://jcenter.bintray.com/com/android/tools/build/gradle/2.1.2/gradle-2.1.2.pom" rel="nofollow noreferrer">https://jcenter.bintray.com/com/android/tools/build/gradle/2.1.2/gradle-2.1.2.pom</a>'.
    Received status code 403 from server: Forbidden</p>
  </blockquote>
  
  <p>When I try to open the same url above from my browser, it downloads the .pom file, which means the proxy is not blocking it. I have configured the studio with the proxy address and login credentials. Can anyone explain me why is android studio unable to connect to the same site that the browser can open.</p>
  
  <p>Note: I could not find any hint about this in the existing questions about gradle behind proxy, so this new question.</p>