After you set up your security verification methods for your work or school account, you can update the related details.
Using the Security info page
If your organization provided you with specific steps about how to turn on and manage your two-factor verification, you should follow those instructions first. Otherwise, you can get to your security verification method settings from the Security info page.
Note: If what you're seeing on your screen doesn't match what's being covered in this article, it means that your organization provides your own custom portal. For more information, contact your organization's Help desk.
To get to the Security info page
You can follow this link to open the Additional security verification page.
Or you can get to the Additional security verification page by following these steps:
Sign into the Microsoft 365 portal (office.com).
Select your avatar in the top right, then select View account.
Under Security info select Update info.
Note: For information about using the App passwords section of the Additional security verification page, see Manage app passwords for two-factor verification. App passwords should be used only for apps that don't support two-factor verification.
Add a new account to the Microsoft authenticator app
Important: If you already set up your work or school account in the Microsoft Authenticator app, you don't need to do it again.
Go to the Security info page using the steps above.
Select Add sign-in method
Select Choose a method and then Authenticator app.
Follow the on-screen instructions, including using your mobile device to scan the QR code, and then select Next. You'll be asked to approve a notification through the Microsoft Authenticator app, to verify your information.
Delete your account or device from the Microsoft Authenticator app
You can delete your account from the Microsoft Authenticator app, and you can delete your device from your work or school account. Typically you delete your device to permanently remove a lost, stolen, or old device from your account, and you delete your account to try to fix some connection issues or to address an account change, such as a new user name.
To delete your device from your work or school account
Go to the Security info page, find the device you want to delete and select Delete.
To delete your account from the Microsoft Authenticator app
From the Microsoft Authenticator app, select the account you want to delete, then select Settings and Remove account.
Turn on two-factor verification prompts on a trusted device
Depending on your organization's settings, you may see a check box that says "Don't ask again for n days" when you perform two-factor verification. If you've selected this option to stop two-factor verification prompts, and then you lose your device or your device is potentially compromised, you should have Microsoft 365 sign you out of all your devices to help protect your account. Unfortunately, you can't sign out of a specific device unless you have access to that device, so you need to sign out of all of them at once.
The next time you sign in you'll be prompted once again for your two-factor verification, as a safety measure.
Tip: Two-step verification is also known as multi-factor authentication. To learn more about it see What is: Multifactor Authentication.
To sign out of your devices
From the Additional security verification page, select Sign out everywhere. The next time you sign in on any device, you'll be prompted to perform two-factor verification.
Manage app passwords for two-factor verification for any apps that don't support two-factor verification.