Open Microsoft Authenticator on your old phone, go to Settings, and enable cloud backups. Then install Microsoft authenticator on your new phone and tap “Begin Recovery.” The accounts that were backed up from your old phone will be transferred to your new phone.
Using an authenticator app for two-factor authentication (2FA) is more secure than SMS messages, but what if you switch phones? Here’s how to move your 2FA accounts if you use Microsoft Authenticator.
Previously, we looked at moving 2FA accounts in Google Authenticator to a new phone. We found that there’s no way to export all your accounts, and then import them onto a new phone. You have to re-create your 2FA accounts on your new phone manually.
Fortunately, Microsoft Authenticator provides a backup and recovery option. Note that 2FA is designed to make it extremely hard to access an account unless you have the 2FA code. Most accounts provide backup codes you can use if you’ve lost or damaged your phone.
Make sure you have a copy of the backup codes for each account before you attempt to change your authenticator device….
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