I want to use Windows Authentication and get User info such as Givenname, Surname, etc.
I used UserPrincipal.Current
in IIS and I got an exception, but IIS express looks fine.
I solved by using a Find Method:
var domain = new PrincipalContext(ContextType.Domain);
var currentUser = UserPrincipal.FindByIdentity(domain, User.Identity.Name);