I have written an ASP.NET app that can be accessed over the Internet with a Jornada Pocket PC running Windows CE 3.0. The application works fine unless you disable anonymous authentication and attempt to authenticate with Windows Challenge/Response. The Windows Challenge/Response authentication does work if you are using a standard browser. The reponse you get to the Challenge/Response authentication is "The page you are looking for cannot be found." The problem is documented in Microsoft article Q292239, "List of Issues Fixed in Pocket PC Service Pack 1 (SP1)". Unfortunately the link to the Service Pack on Microsoft's site is broken and I can't get any response from Microsoft or HP. Did anyone download this service pack and would be willing to send it to me or know of a working link?