Context.User在Signalr 2.0 Hub中为null

I'm using VS 2013 Express and the standard MVC5 template to create a new clean app. Authentication is enabled and I can log into the site just fine. I can see the user context in my controllers, but when I add Signalr I can't get the Hubs to register that authentication has take place.I'm using VS 2013 Express and the standard MVC5