Q. After scanning the QR code displayed on the security protection screen using the Microsoft Authenticator app, an error occurred and the THERS account could not be added. The error message shown was: "Activation code is invalid".
A. Please make sure that push notifications are enabled for the Microsoft Authenticator app.
If the issue persists even with push notifications enabled, please try the following steps.
- Restart the smartphone.
- Reinstall the Microsoft Authenticator app.
*Caution: Reinstalling the app will erase all existing MFA account registrations.