Unreal Engine 4 is available for Win10 UWP app dev now

[anonymous_user_537a337d]

@;723727

OnlineSubsystemUtils is probably a good idea - in particular it contains the platform-independent Blueprint interface to the OnlineSubsystem. But if your build succeeds without it then it’s not essential - it certainly isn’t related to your sign-in problem.

Got it. I’m packaging now (UWP64).