Does [Authorize(Roles = "Admin")] work out of the box in MVC 5 RTM with ASP.NET Identity?
I've had no luck. Note that [Authorize] and [Authorize(Users = "AdminUser")] work just fine, and the AspNetUserRoles and AspNetRoles tables are populated as I would expect them to be, establishing a relationship between the AdminUser user and the Admin role. This issue seems specific to roles.