By default, SMS OTP is the method to authenticate. But you can decide to use an alternative method by using Microsoft Authenticator app on Android/iOS. Using app is considered more stable since it does not have the risk of not receiving SMS as the default method.
- Download and Install "Microsoft Authenticator" app for Android, iOS.
- Sign into Office 365 with your browser via https://Office.com
1. Configure:
- Click icon profile then choose ‘View Account’.
2. Method :
- Click "Add Method".
- Choose "Authenticator App", click "Add"
- Then click "Next"
- After the 2nd Next. You need to open the "Microsoft Authenticator" app on your phone.
+ Open "Microsoft Authenticator" app, then choose + add account.
+ Choose Work or school account.
- When done. You can choose default method: