How to enable Two-Factor Authentication for Microsoft To-Do
Before you can set up 2-Step Verification for your Microsoft To-Do account you'll need to download Authenticator App on your device by searching for it in your Apple device's App Store, click on the button below Download on the App Store or scan the QR Code.
If you have lost access to your two-factor authentication (2FA) code generator, please get in touch with the Microsoft To-Do support team for assistance.