A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
To fully remove an old email/account from Microsoft Authenticator:
- Open Microsoft Authenticator.
- Select the old account.
- Tap the Settings gear.
- Tap Remove account.
If Remove account is not available or the account will not go away, remove all accounts by resetting the app data.
Android
- Open the device Settings app.
- Select Apps.
- Select Authenticator.
- Select Storage or Storage & cache.
- Tap Clear data and then OK.
iOS
- Open the device Settings app.
- Select General then Storage.
- Select Authenticator.
- Tap Offload App.
Important:
- There is no undo when all app data is removed.
- All accounts will be removed.
- The device will no longer be usable to verify sign-in for those accounts until they are set up again.
If the old email is also still configured as a sign-in or verification method on the Microsoft account itself, remove it from the account security settings:
- Sign in to the Advanced security options page of the Microsoft account.
- Expand the verification option.
- Select Remove, then select Remove again to confirm.
If all security information is removed from the Microsoft account, the account can enter a restricted state for 30 days.