Rick,

The more I've worked on this I think it is the cookies. The right number are there when I look with myHttpWebRequest.headers.getcookieheader(myUrl), but somehow it is not liking the cookies.

Its all https so I guess my best sniffers are instrumented wininet.dll on browser side and .NET code on my side creating a log of statuscode, headers, and body/content.

>
>Have you tried using the wwHttp .Net class from http://www.west-wind.com/articles.asp ?
>
>Maybe you're not doing the cookies right. Are you using the Cookie collections? It's not that trivial to get these right and properly handle cookies reliably.
>
>You might also want to check out an HTTP sniffer to see what really goes over the wire and not just what you capture with IE...
>
>Try the EffeTech HTTP Sniffer (search on the Web for it), which has gotten me out of a bind more than a few times trying to debug HTTP traffic issues.
>