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Set Up Microsoft Authenticator and a Passkey – iPhone

Loyola recommends two sign-in methods, both in the Microsoft Authenticator app on your iPhone:

  • Part A – Microsoft Authenticator: approve sign-in requests or use one-time codes.
  • Part B – Passkey in Microsoft Authenticator: sign in with your face, fingerprint, or PIN. Passkeys cannot be phished.

Set up Part A first. It takes about five minutes.

Before you begin

  • Your iPhone must have a screen lock (PIN, fingerprint, or face unlock).
  • Know your Loyola UVID and password.
  • This guide shows setup using only your iPhone. If you are using a computer, choose Show QR code in step 3 and scan it with Authenticator.

Part A – Set up Microsoft Authenticator

1. Install the app

Open the App Store, search for Microsoft Authenticator, and tap Get (or the download icon if you have installed it before). Make sure the publisher is Microsoft Corporation.

iOS Part A1 - App Store

Open the app. You will see the screen below. Leave it open for now.

iOS Part A2 - Ready to Add

2. Start setup on the sign-in page

Go to LUC.edu/mfapreferences and sign in with your UVID and password. If you have not set up MFA yet, you will see Let’s keep your account secure. Tap Next.

iOS Part A3 - Keep Account Secure

You will be asked to install Microsoft Authenticator. You already did this, so tap Next.

iOS Part A4 - Install Authenticator

3. Connect the app to your account

  • If you are setting up on your iPhone only: tap Pair your account to the app by clicking this link. Authenticator opens and adds your account.
  • If you are setting up on a computer: select Show QR code, then in Authenticator tap Scan QR code and point your camera at the screen.

iOS Part A5 - Pair Authenticator

Authenticator confirms your account was added. Tap OK.

iOS Part A6 - Account Add Success

4. Approve the test sign-in

Go back to the sign-in page. A two-digit number appears.

iOS Part A7 - Try it Out

Remember the number before you switch apps. On iPhone you need to switch from your browser to Authenticator to enter it.

In Authenticator, type the number and tap Yes.

iOS Part A8 - Enter Number

Not getting the sign-in request? Make sure notifications are on: Settings > Notifications > Authenticator > Allow Notifications.

Authenticator shows Approved.

iOS Part A9 - Approved

5. Finish

Back on the sign-in page, you will see Authenticator Added. Tap Done. Microsoft Authenticator is now your sign-in method.

iOS Part A10 - Authenticator Added

Part B – Add a passkey in Microsoft Authenticator

1. Turn on Authenticator for passkeys

This requires iOS 17 or later. Open Settings and tap General.

iOS Part B1 - General Settings

Tap AutoFill & Passwords.

iOS Part B2 - Autofill Settings

Under AutoFill from, turn on Authenticator.

iOS Part B3 - Authenticator Settings

2. Choose Passkey in Microsoft Authenticator

Go to LUC.edu/mfapreferences and sign in. Tap Add sign-in method, then choose Passkey in Microsoft Authenticator.

iOS Part B4 - Add Passkey Method

Read the requirements (iOS 17 or later, and the latest version of Authenticator) and tap Next.

iOS Part B5 - Create Passkey

The page tells you to finish in the Authenticator app. Leave this page open.

iOS Part B6 - Finish in App

3. Create the passkey in the app

Open Authenticator and tap your Loyola account. Under Other ways to sign in, tap Create a passkey.

iOS Part B7 - Create Passkey in App

On Let’s create your passkey, tap Sign in and sign in with your Loyola account if asked.

iOS Part B8 - Sign In

Confirm with Face ID, Touch ID, or your passcode when your iPhone asks. The passkey is not created until you do.

Authenticator creates the passkey. This takes a few seconds.

iOS Part B9 - Creating Passkey

4. Done

When you see Passkey created, tap Done. Authenticator names the passkey for you (for example, Authenticator - iOS).

iOS Part B10 - Passkey Created in App

Back in your browser, the page also shows Passkey created. Your Security info list now includes Passkey (Device bound).

iOS Part B11 - Passkey Created in Browser

This passkey stays on this iPhone. It does not sync to your other devices. If you replace your phone, set up Authenticator and a new passkey on the new phone. If you lose your phone, please contact the ITS Service Desk for support.

Need help?

Contact the ITS Service Desk at 773-508-4487 or ITSServiceDesk@luc.edu.

Last Modified:   Wed, October 21, 2026 4:06 PM CDT