Yes, ExternalBrowser is set to True
Assuming you are using a callback url similar to: "https://login.live.com/oauth20_desktop.srf":
This change was necessary to enable external browser support which is starting to becoming a requirement for the OneDrive API.
Can you please make sure you are using an indentical URL (including port number) for both the app configuration on the Microsoft console and the App.CallbackURL property of the component?
Redirect URIs: http://localhost:8000
If you use the FMX Cloud component and the ExternalBrowser option then you have to define definitely the