How to set up Microsoft Authenticator, the easy way

Setting up Microsoft Authenticator can feel confusing at first, but it does not have to be. This guide walks you through downloading the app, scanning the QR code, and linking your work account step by step in plain language. By the end, two-factor authentication will be active on your account and your login will be significantly more secure.

How to set up Microsoft Authenticator

Open your phone's camera and scan the QR code for your device type to download the Microsoft Authenticator app from your app store. Once installed, put your phone down and continue on your computer.

Step 1. Open Google Chrome on your computer. Select Guest Mode in the bottom-right corner. If Guest Mode is not visible, click the three dots in the top-right corner and choose New Incognito Window.

Step 2. Type https://outlook.office.com in the address bar and press Enter.

Step 3. When the Microsoft sign-in prompt appears, enter your work email address and click Next.

Step 4. Enter your password and click Next.

Step 5. Click Next on the following three prompts as they appear on screen.

Step 6. Pick up your phone and open the Microsoft Authenticator app.

Step 7. Tap the plus sign in the upper-right corner of the app.

Step 8. Select Work or school account.

Step 9. Select Scan QR code.

Step 10. Hold your phone camera over the QR code displayed on your computer screen. The scan window closes automatically once the code is read.

Step 11. Once the scan window closes on your phone, click Next on your computer.

Step 12. Approve the authentication prompt on your Authenticator app by entering the two-digit number shown on your computer screen.

Step 13. Click Next on the following prompt.

Step 14. Enter your phone number for the second verification step and click Next.

Step 15. Enter the six-digit code received by text message and click Next.

Step 16. Click Next, then click Done. Setup is complete.

The first time you add your email to the Outlook desktop app, you will be prompted to approve a sign-in through the Authenticator app. Use the same two-digit number method to approve it.

Why two-factor authentication matters for your business

Two-factor authentication stops unauthorized logins even when a password has been stolen or guessed. It is one of the most effective controls a small business can put in place. Wolferdawg IT Consulting helps businesses in Lawton, Duncan, and across Southwest Oklahoma configure Microsoft 365 security settings, enforce multi-factor authentication policies, and train staff so the protection actually gets used.