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December 6, 2009

The underlying connection was closed: An unexpected error occurred on a send.

Unable to write data to the transport connection: An established connection was aborted by the software in your host machine.
Task:
use .NET HTTPWebRequest and/or WebRequests to put or post large or big file to Sharepoint2007 ( >20Mb) behind a proxy server using basic authentication.

Problem:
The underlying connection was closed: An unexpected error occurred on a send.
Unable to write data to the transport connection: An established connection was aborted by the software in your host machine.
errors.


Solution:
http://support.microsoft.com/kb/915599
I don't normally just refer pages on this blog. But there is so much bad, incomplete and misleading information on this subject. I'm doing it partially to get the MS page ranked higher.

One more is at http://sharepoint2009.blogspot.com/2008/03/content-deployment-5323-and-4958.html but this one didn't help me.
Posted at 7:54 PM by Bill Stockton