Here’s a clear, step-by-step guide to setting up Two-Factor Authentication (2FA) with Microsoft. This works for Microsoft 365, Outlook, Teams, Azure AD (Entra ID), and most Microsoft work or school accounts.

Microsoft 2FA Setup Guide

What is Microsoft 2FA?

Two-Factor Authentication (also called Multi-Factor Authentication / MFA) adds an extra layer of security by requiring something you know (your password) and something you have (your phone, app, or security key).

Step 1: Sign in to Microsoft Security Settings

1. Go to:
   https://mysignins.microsoft.com/security-info

2. Sign in with your Microsoft account

3. You’ll see a Security info page

Step 2: Add a Sign-In Method

1. Click Add sign-in method

2. Choose Authenticator app

3. Click Add

Step 3: Install Microsoft Authenticator (If Needed)

If you don’t already have it:

• iOS: App Store → Microsoft Authenticator

• Android: Google Play Store → Microsoft Authenticator

Open the app once installed.

Step 4: Connect the Authenticator App

1. On your computer, click Next

2. Open Microsoft Authenticator on your phone

3. Tap + → Work or school account

4. Scan the QR code shown on your screen

Step 5: Approve the Test Notification

• Microsoft will send a test notification to your phone

• Tap Approve in the app

Once approved, the app is successfully linked 🎉

Step 6: Add Backup Methods (Strongly Recommended)

In case you lose access to your phone, add at least one backup:

Recommended options:

• Phone number (SMS or call)

• Alternate authenticator app

• Security key (YubiKey, etc.)

To add:

1. Click Add sign-in method

2. Choose your backup option

3. Follow the prompts

Step 7: Confirm Default Sign-In Method

Make sure Microsoft Authenticator – notification is set as your default method.

You can change this anytime on the Security info page.

What Happens After Setup?

• When signing in, you’ll enter your password then

• You’ll receive a push notification or code in your Authenticator app

• Simply approve to finish signing in