Explanation/Reference:
Explanation:
The current application callback URI is used as an implicit value of the callbackUri parameter of the AuthenticateAsync method. However, applications need the URI value to add it to the request URI as required by the online provider.
The requestUri parameter must be a HTTPS address: an exception will be thrown if an HTTP address is used, even for local testing scenarios.
Reference: https://docs.microsoft.com/en-us/uwp/api/
windows.security.authentication.web.webauthenticationbroker