ASP.NET MVC user friendly 401 error

Question

I have implemented errors handling in ASP.NET MVC site in a way like suggests this post.

With 404 errors all works fine. But how correctly show user friendly screen

Answer 1

If you're using ASP.NET MVC, you're more than likely to use IIS, so why don't you just set up IIS to use your custom 401 error page for that Web Application / Virtual Directory?