I've been fighting with this for weeks. The answer from outwrq worked for me!! (https://developer.apple.com/forums/thread/651533?answerId=675235022#675235022): Hi All, No work around found for iOS 14 + yet. However here is a workaround for implementing sign in with apple (for development in the simulator) that we've been using: Download the 13.7 simulator - Xcode > Preferences > Components > iOS 13.7 Simulator Change the build version in Targets > Deployment Info to iOS 13.6 or below. Run the simulator by selecting the 13.7 Sim. We have been doing this for any of the Sign in with apple implementation and it seems works fine. We are switching back to later versions for testing on normal devices where this issue doesnt seem to occur.