Microsoft 365 Multi-Factor Authentication Setup Guide
Multi-factor authentication can reduce the risk of password leaks.
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*Starting in October 2025, multi-factor authentication is required when logging in to Microsoft 365. If multi-factor authentication is not set up, you will not be able to log in, so please set up multi-factor authentication yourself.
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多要素認証の方式として、以下のものが利用できます。
| Authentication Method | Description | Available users |
| Microsoft AuthenticatorのMFA (as described in this setup guide) |
Authenticating with the Microsoft Authenticator app for iOS/Android | Student, faculty, and staff |
| Passkey (FIDO2 security key) | FIDO2 compatible hardware key (YubiKey, etc) | Student, faculty, and staff |
| Passkey (Microsoft Authenticator) | Passkey saved on your smartphone | Student, faculty, and staff |
This guide explains how to install and use the Microsoft Authenticator app on your iOS or Android smartphone.
① Open your Microsoft account page
From a PC web browwer
Go to and sign in.
If you are already signed in, authentication will be skipped and you can proceed to step ②
On the Microsoft Sign-in dialog, enter
User ID@sic.shibaura-it.ac.jp
and press "Next".
The ADFS sign-in screen will be displayed.
Sign in with your Science Information Center account.
If you are successful in signing in, the "My Sign-in" security information page will be displayed.
If an authentication method you are unfamiliar with (such as phone number or software token) is registered as a sign-in method on this screen, this may be fraudulent use. Please contact the Informational Innovation Section immidiately without deleting your registered information.
② Add a sign-in method
Click "+Add a sign-in method"
A screen will appear asking you to select the sign-in method,
Select "Microsoft Authenticator" (not "Microsoft Authenticator passkey"
Your will then be prompted to download the app.
③ Install the Microsoft Authenticator app on your smartphone
For iOS, install the Microsoft Authenticator app from the App Store.
For Android, install the Microsoft Authenticator app from the Google Play Store
④ Launch the Microsoft Authenticator app
Accept the privacy statement
Continue.
Press Skip.
Press "Add Account"
(If you have alraedy registered a other account. press the "+" in the upper right corner.)
Press "Work or school account"
Press "Scan QR code"
⑤ Scan the QR code to register
Return to the PC screen and press "Next" on the app acquisition screen.
Click "Next" on the account setup.
A QR code will be displayed
Scan the QR code with the Microsoft Authenticator app.
When you scan, a confirmation will appear asking for permission to send notifications, so press "Allow".
Now you have registered your smartphone.
return to your PC's web browser and Click "Next"
A two-digit number will appear on the "Try it out" screen and you will receive a notification on your smartphone.
Enter the two-digit number displayed on your PC's web browser into the Microsoft Authenticator screen on your smartphone and press "Yes"
Microsoft Authenticator has been registered to your Microsoft account. Click "Next".
If "Microsoft AUthenticator" is registered in "Security Information". Registration is complete.
⑥ How to use
Please refer How to use Microsoft 365 multi-factor authentication.
⑦ If you change your smartphone
If you change your smartphone model, you will need to register your new smartphone with Microsoft Authenticator.
Connect your previous device to the network via Wi-Fi or other means and register your new device using step ①.
If the previous device cannot be used, a reset will be required on an individual basis. Please contact the Information Innovation Division.