title: Update Android Studio from previous Version
body: <p>Connection failed(Unable to tunnel through proxy).Proxy returns "HTTP/1.1 403 Forbidden").please check network connection and try again.</p>
  
  <p>Why I am getting this error.My current version is 1.5 and on updating it gives this error.Is it a bug?I am able to access internet on my office network an dI think I have configured my proxy correctly.
  I uninstalled my AS 1.5 and downloaded the fresh version AS 2.1.1 and then installed it but again if I try to check for updates by going to Help> Check for Updates  I get the same error.</p>
  
  <p>I tried this both on Windows and Ubuntu 12.04.</p>
  
  <p><a href="https://i.stack.imgur.com/bEAnM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bEAnM.png" alt="Android Studio Update Error ,update from 1.5"></a></p>