OK, really not that secret. Basic Authentication headers are pretty simple. When the server returns 401 and the header: WWW-Authenticate: Basic. The server wants you to send the username and password in this format: jeff:mypassword and then encode this as a Base64String. You can encode this with this...

There are some powerful tracing tools built into Windows 7 that can help you diagnose Internet Client issues. This walk though shows you now to enable tracing when accessing a web site using Internet Explorer 8 or other WinInet based applications. Network tracing in Windows 7 (ref: http://msdn.microsoft...

WinhttpTracecfg.exe for Vista does not exist, so how can you get a WinHttp trace in Vista and above? WinHttpTraceCfg.exe has been replaced in Vista and above with the netsh winhttp command. see this blog: http://blogs.msdn.com/wndp/archive/2007/03/21/winhttp-configuration-for-windows-vista.aspx ...

Download Fiddler from http://fiddlertool.com and run this for an Internet Explorer browser session that successfully connects. Then hit the same site with your .NET 2.0 client application and make sure you set the credentials in your code as well: http://msdn.microsoft.com/en-us/library/system...

Overview You can solve issues encountered when using the HTTP protocol by applying the principles in this article. By simplifying the issue into a small reproducible problem you can effectively troubleshoot and resolve most problems encountered in code that uses the HTTP protocol. Crucial steps to troubleshooting...