Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello @Hakes, Dan
To remove an account from the Microsoft Authenticator app, open the app and select the account you would like to remove. Then, click the Settings (gear) icon in the top-right corner and choose Remove account.
If you would like to remove completely the Microsoft Authenticator MFA method from your account, sign in to the Security Info page and locate the Microsoft Authenticator method under your registered security methods. After removing it, I strongly recommend that you add and verify an alternative authentication method, such as a phone number, another authenticator app, or a different security method available in your organization.
This is important because if Microsoft Authenticator is your only MFA method and it is removed, you may be unable to complete multi-factor authentication and could lose access to your account. Once another method is configured successfully, you can safely remove the existing Authenticator method and, if needed, set up Microsoft Authenticator again on a new device.
If you have any further questions or concerns, please feel free to let me know.