C++: Authorization issue. AUTHRET_NONE from authService->GetAuthResult, callback never invoked, can't login or join meetings

I fixed the issue. The solution was the same as this one:

Even when creating a SDK application without any UI, this appears to still be necessary to ensure that the SDK calls the callback functions.

This issue also happens with the C# wrapper if you don’t have a UI for your app. I’m unsure how you would resolve this when using the C# wrapper.