The page you are requesting cannot be served because of the extension configuration.
Today I was getting bored. So just for time pass I was uninstalling and installing IIS repeatedly. Just for fun. Sounds crazy right? But I was doing it.
Finally at the second half my team lead asked me to create a sample WCF service and host in IIS with some useless functionality. J
Well, I created WCF, hosted in IIS. When I browsed .svc page, I received following error –
HTTP Error 404.3 – Not Found
The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.
This was the point when I was happy!! J
Cause of the Problem – If you have Visual studio installed, then uninstall and install IIS again, then you will get above error. Due to uninstall of IIS, extension mappings for WCF SVC file were removed.