When you tell the Visual Studio IDE to generate a web project (instead of just using an autogenerated page) for a Silverlight project, it creates a project named SilverlightAppName.Web with a SilverlightAppNameTestPage.aspx (ASP.net) and an SilverlightAppNameTestPage.html. Either one can be served from a web server (obviously the .aspx one from ...

Copying from MPPVE (formerly RCE) documentation: …might indicate that WCF is not correctly configured. To resolve the WCF issue The error returned is a “HTTP Error 404 – Not Found”. This might be due to an issue with the WCF scriptmaps registrations. To solve this issue: Open a command line console as Administrator Browse to [...]