Requirement
Before you can enable Office 365 sign-in without a password, you must have configured the Microsoft Authenticator app: How do I sign in with my OST account for the first time?
- Open the Microsoft Authenticator app on your smartphone and select your OST account.
- Click the pull-down menu in the upper right corner and select enable phone sign-in:
Then follow the instructions on your phone to register your device for this service. - The next time you log in to Office 365, you will no longer have to enter your OST password, but instead confirm the two-digit code that appears on your smartphone screen:
Continue to tip 4: Where can I change or add to the security check stored in Office 365?