Hello, We have developed AuthorizationPlugin to replace loginwindow:login, and it can work normally before macOS 10.15.6. But we tested the AuthorizationPlugin in Big Sur bata version and it didn't work. We cannot log into Big Sur beta 6 using the following API. SetContextValue(engineRef, kAuthorizationEnvironmentUsername, 1, &userNameValue); SetContextValue(engineRef, kAuthorizationEnvironmentPassword, 1, &userPasswordValue); SetResult(engineRef, kAuthorizationResultAllow); We are worried that the official version of Big Sur will have this problem.