Guide: Setting Up Two-Factor Authentication (2FA) on a Personal Device Using Microsoft Authenticator

Two-Factor Authentication (2FA) adds an extra layer of security to your Microsoft 365 work account. This guide explains how to set up Microsoft Authenticator on your personal device and link it to your work account.

Prerequisites

• A personal smartphone (iOS or Android).
• Microsoft Authenticator app installed:
  • Download from App Store (iOS) or Google Play (Android).
• Your Microsoft 365 work account credentials.

Step 1: Install Microsoft Authenticator

1. On your personal device, open the App Store or Google Play Store.
2. Search for Microsoft Authenticator.
3. Download and install the app.

Step 2: Sign in to Your Work Account

1. On your computer, go to:
   https://mysignins.microsoft.com/security-info
2. Sign in with your Microsoft 365 work account.

Step 3: Add Microsoft Authenticator as a Sign-In Method

1. On the Security Info page, click Add sign-in method.
2. Select Authenticator app from the dropdown.
3. Click Add.

Step 4: Link Your Account to the Authenticator App

1. A QR code will appear on your computer screen.
2. On your phone:
   • Open Microsoft Authenticator.
   • Tap Add account → Work or school account.
   • Choose Scan QR code.
3. Scan the QR code displayed on your computer.
4. The account will now appear in your Authenticator app.

Step 5: Verify Setup

1. After scanning, you’ll be prompted to approve a test notification.
2. Approve the notification on your phone.
3. Your Microsoft 365 account is now linked to Microsoft Authenticator.

Optional: Set Authenticator as Default

• On the Security Info page, set Microsoft Authenticator as your default sign-in method for added convenience.

Additional Tips

• Backup your Authenticator app: Enable cloud backup in the app settings to avoid losing access if you change devices.
• Do not share codes: Keep your device secure and never share authentication codes.
• Contact IT if you lose your device or cannot access your account.