http://blogs.iis.net/danielvl/archive/2009/03/23/faster-proxy-detection-for-httpwebrequest.aspxDo a web request using System.Net classes, HttpWebRequest or WebClient. For example: new   WebClient().DownloadFile( "http://tinyurl.com/d5yy8a" , @"C:\Temp\file.xml" ) ; Or: HttpWebRequest.Create( "http://tinyurl.com/d5yy8a"enCommunityServer 2007 SP1 (Build: 20510.895)