- Sign in to the Security info page of your work or school account at mysignins.microsoft.com/security-info.
- Select Add sign-in method.
- Choose Microsoft Authenticator from the dropdown and select Add.
- If you already have Authenticator installed on your phone, select Next to display a QR code.
- Open Authenticator on your phone and select the plus icon and select Add account.
- Select Work or school account then tap Scan a QR Code.