Where does <customErrors> in web.config go for MVC applications?

asp.net-mvc, asp.net-mvc-4, web-config

Solution

`<customErrors>` goes inside `<system.web>`:

<configuration>
    <system.web>
        <customErrors mode="RemoteOnly">
            <error statusCode="500"
                   redirect="~/Error/InternalServer" />
            <error statusCode="404"
                   redirect="~/Error/NotFound" />
        </customErrors>
    </system.web>
</configuration>

Modify values of the `redirect` attributes according to your routes. You can also implement a catch-all redirect by adding a `defaultRedirect` attribute to the `customErrors` element. See this MSDN article for more information.

Problem

I'm attempting to implement custom error handling in my MVC 4 app. I'm not certain where in my web.config the `<customErrors>` is supposed to go, and the general information I need to include in it.

Original source