WCF service hosting in IIS 7.5 - The page you are requesting cannot be served because of the extension configuration

Whenever I publish WCF service to IIS. It is almost I have become habituated to get this 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.

The practice I have maintained: is to change application pool for the website to classic mode. But this time I am out of luck.

Q.1. Can you please help?
Q.2. As the error suggests: Should I configure .svc MIME map some where in IIS?
Q.3. For WCF to operate in integrated pipeline mode, Is there any specific configuration required?

Solution

Try enabling HTTP Activation

Go to Control Panel > Windows Features > .NET Framework 4.5 Advanced Services > WCF Services > HTTP Activation(tick this)