Passwordless Authentication for Microsoft 365 and Other Online Services

Introduction

Passwordless authentication allows MFA‑enabled MinnState users to sign in to Microsoft 365 and other online services without a password. Instead, you use the Microsoft Authenticator app with number matching to securely confirm your identity.

When you sign in, Microsoft displays a number on the login screen. You simply open the Authenticator app and enter that number to approve the request. This ensures the person signing in is the same person approving the login—helping prevent accidental approvals and credential‑theft attacks.

Note: Screens may look slightly different depending on whether you use an iPhone or Android device.


Instructions to Register for Passwordless Authentication

Step 1: Install and Set Up Microsoft Authenticator

If you already have the app installed and set up, skip to Step 2.

  1. Go to https://aka.ms/mysecurityinfo
  2. Sign in with your MinnState credentials.
  3. Select Add sign-in methodAuthenticator appAdd.
  4. Follow the on‑screen prompts to install and configure the Microsoft Authenticator app on your phone.
  5. When setup is complete, select Done.

Step 2: Enable Phone Sign‑In (Passwordless)

  1. Open the Microsoft Authenticator app.
  2. Tap your @minnstate.edu account.
  3. Select Enable phone sign-in or Set up passwordless sign‑in requests.
  4. Follow the prompts in the app to finish linking your device.

passwordless text option on mfa screen

Verify that "Ways to sign in or verify" displays Passwordless sign‑in requests. You are now registered for passwordless sign‑in.

passwordless sign in request pop up screen


How to Sign In Using Passwordless Authentication

  1. Enter your username on the Microsoft 365 sign‑in page.
  2. Select Next.
  3. If prompted, choose Other ways to sign in.
  4. Select Approve a request on my Authenticator app.
  5. Open the Authenticator app and enter the number displayed on your screen to complete login.

How to Verify You Are Already Enrolled

  1. Visit https://aka.ms/mysecurityinfo.
  2. Look for a sign‑in method labeled Microsoft Authenticator – Passwordless sign‑in.
    • If you see this listed, you are fully enrolled.security info screen that shows your options your setup for

Common Issues We’ve Seen

  • Users often think passwordless isn’t working because their Authenticator app isn’t updated.
    • Make sure your app is fully updated through the Apple App Store or Google Play Store.
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