http://blogs.msdn.com/b/jpsanders/archive/2011/03/17/super-secret-how-to-decode-base64-basic-authentication.aspxOK, 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 encodeen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/jpsanders/archive/2011/03/17/super-secret-how-to-decode-base64-basic-authentication.aspx#10411875Wed, 17 Apr 2013 14:11:03 GMT91d46819-8472-40ad-a661-2c78acb4018c:10411875Jeff Sanders<p>PS, if you are not doing this programmatically you can use the Fiddler TextWizard to convert strings back and &nbsp;forth.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10411875" width="1" height="1">http://blogs.msdn.com/b/jpsanders/archive/2011/03/17/super-secret-how-to-decode-base64-basic-authentication.aspx#10143114Fri, 18 Mar 2011 15:15:09 GMT91d46819-8472-40ad-a661-2c78acb4018c:10143114Alan McF<p>:-)</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10143114" width="1" height="1">