How to create a CustomPrincipal globally (with and without AuthorizeAttribute)

Question

I have a custom Principal/Identity for my ASP.NET MVC4 web app. I have also created a AuthorizeAttribute to instantiate my custom principal, assigning it to httpContext.User

Answer 1

Overridding Principal in:

protected void Application_PostAuthenticateRequest(object sender, EventArgs e)

Instead of

protected void Application_AuthenticateRequest(object sender, EventArgs e)

In Global.asax.cs worked for me in an ASP web application