We have a Windows 8 Application running behind the proxy and it throwing the exception “Proxy authentication required (407).”
In our application, we are trying to read some RSS feed using the following Code snippet
SyndicationClient client=new SyndicationClient();
SyndicationFeed feed=await client.RetrieveFeedAsync(feedUri);
Most of the times above code returns the “Proxy Authentication required” exception.
Once we enabled the Internet(Client & Server) capability, the issue got resolved. Earlier only the Internet(Client) capability was enabled.