Where does in web.config go for MVC applications?

Question

I\'m attempting to implement custom error handling in my MVC 4 app. I\'m not certain where in my web.config the is supposed to go, and the

Answer 1

In web.config file under root directory

Create a shared folder under view folder, and create a view under shared folder for showing Error message

in action use that [HandleError] like

[HandleError]
    public ActionResult Errors()
    {
        throw new Exception();
    }