There are three options available:
- Authentication phone (call)
- Authentication phone (send code via text message (SMS))
- Authentication app
The easiest method is option 1. With this method, you simply receive a call from Microsoft and press the # button to complete the authentication.
For option 3, you need to install the Microsoft Authenticator app on your smartphone. This method is convenient for those who frequently change their phone number due to traveling between Japan and overseas or are concerned about the cost of receiving calls while abroad.
※We recommend that you set up both phone and
application. If you set up only one method, you might not be able to authenticate.(Changing or adding multi-factor authentication settings)