In my previous post, "ASP.NET MVC 5 Authentication Breakdown", I broke down all the parts of the new ASP.NET MVC authentication scheme. That's great, but I didn't have a working example that you, a curious developer, could download and play around with. So I set out today to figure out what the bare minimum code needed was. Fiddling around, I was able to get OWIN powered authentication into an ASP.NET MVC app. Follow this guid to get it into your application as well.