http://blogs.msdn.com/engelsr/pages/the-underlying-connection-was-closed.aspxPlease use the following KB article if you get any "Underlying connection was closed" error. 915599 You receive one or more error messages when you try to make an HTTP request in an application that is built on the .NET Framework 1.1 Service Pack 1 http://support.microsoft.com/default.aspx?scid=kb;EN-US;915599en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/engelsr/pages/the-underlying-connection-was-closed.aspx#527001Wed, 08 Feb 2006 01:07:42 GMT91d46819-8472-40ad-a661-2c78acb4018c:527001jasperkpretty comprehensive! keep up the good work!http://blogs.msdn.com/engelsr/pages/the-underlying-connection-was-closed.aspx#537928Thu, 23 Feb 2006 19:39:08 GMT91d46819-8472-40ad-a661-2c78acb4018c:537928Engels Rajangam <br> HTTP client classes/technologiesPlanning to add information on &amp;quot;Underlying connection was closed&amp;quot; errors, until a KB article is written....