A web error occurred while downloading the file

[michael.cafaro]

I am getting the following error on many apps

A web error occurred while downloading the file: SendFailure The underlying connection was closed: An unexpected error occurred on a send.

[Ben Whitmore (Patch My PC)]

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

This is generally a firewall or web proxy. What happens if you manually browse out to the download URL for some of the updates reporting this error?