How to Register a Replacement Device in Microsoft Authenticator
Question details
The user needs to learn how to register a replacement device for multifactor authentication and how to submit feedback about the Microsoft Authenticator app.

- Product
- Microsoft Authenticator
- Device & OS
- not provided
- Scenario
- Setting up a new device for MFA login verification and finding the correct channel to submit feature requests.
- Observed behavior
- The user is looking for the correct procedures to manage their authenticator setup on a new device and provide product feedback.
Ensure you have access to your Microsoft account credentials and an alternative backup authentication method, such as a phone number or secondary email address, before setting up your new device.
Register a Replacement Device for Multifactor Authentication
Set up the Microsoft Authenticator app on a new smartphone or tablet to ensure uninterrupted and secure login access.
When switching to a new device, it is crucial to re-register your authentication app to avoid losing access to your accounts. You can do this by adding your accounts manually or using the cloud backup feature if previously enabled.
Download and install the Microsoft Authenticator app from the App Store (iOS) or Google Play Store (Android) on your replacement device.
Open the app, select 'Add account', and choose either 'Work or school account' or 'Personal account' based on your Microsoft profile type.
Sign in with your email and password. When prompted for multifactor authentication, select an alternative backup method (like SMS or email) to verify your identity.
Follow the on-screen prompts to finish the setup. Once registered, log into your Microsoft account security dashboard on a browser and remove your old device from the authorized list.

Submit Feedback via the Microsoft Feedback Portal
Use the official Microsoft portal to report bugs, suggest features, or review product details for the Authenticator app.
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Frequently Asked Questions
Can I have Microsoft Authenticator active on two devices at once?
Yes, you can set up the Authenticator app on multiple devices. You simply need to add your account to the app on the secondary device and verify the setup using an existing backup authentication method.
What should I do if I lose the phone with my Authenticator app?
If you lose your device, immediately sign in to your Microsoft account using a backup authentication method (like SMS or an alternate email) and remove the lost device from your account's security settings to prevent unauthorized access.
How do I view my current enrolled devices for MFA?
You can review your enrolled devices and operating system details by logging into your Microsoft account via a web browser, navigating to the 'Security' section, and selecting 'Advanced security options'.




