0 IIS 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...


Solution 1 : 

• aspnet_regiis.exe -i -enable           INFO

Solution 2 : 

Add listed roles and features. (You may need to choose NET 4.5 Extensibility and ASP.NET 4.5)