I built the calendar sample in VS 2005 (so with DotNet 2.0).

When I run the app, enter my gmail id & password, the response I get is (407) Proxy Authentication Required

Now I am accessing the service through a web proxy on the network perimeter, but I have snooped the packets and am pretty sure that my request is in fact going through my web proxy, and that this response is coming from Google. Also, I tried programatically setting the Proxy property on the RequestDataFactory for the calendar service, and I still get the (407) Proxy Authentication Required.

The POST headers for the request are all ok - its going to the right URL, with the correct authentication information, etc. And the (407) message is in the response packet (so its not something conjured up inside .Net 2.0).

Any ideas on why this is the case?