Updating MFA MS Authenticator app on a new phone

How to Re-register MFA with a New Phone

If you've replaced your phone and need to set up MFA again, follow these steps:

Step 1: Sign in to Your Security Info Page

1. Go to https://mysignins.microsoft.com/security-info.
2. Sign in using your work or school account credentials.

Note: You must be able to sign in without MFA to access this page. If you're locked out, contact your IT administrator to reset your MFA settings.

Step 2: Remove Your Old Device

1. Under Security Info, locate your old phone listed under Authenticator app or Phone.
2. Click Remove next to the old device.

Step 3: Add Your New Phone

1. Click + Add sign-in method.
2. Choose Authenticator App or Phone depending on your preferred method.
3. Follow the on-screen instructions to:
   • Install the Microsoft Authenticator app on your new phone (if using the app).
   • Scan the QR code or enter the setup code.
   • Verify the setup by approving a test notification or entering a code.

Step 4: Confirm and Save

• Ensure your new phone is listed and marked as default sign-in method if desired.
• You're now ready to use MFA with your new device.