
It's a competitor to other two-factor authentication. Install the Microsoft Authenticator App on your mobile device (download from the App Store or Google Play). Microsoft Authenticator is a two-factor authentication program that provides added security to your online accounts in the form of an app. Download Microsoft Authenticator Use simple, fast, and highly secure two-factor authentication across apps.

This will take you to the Start by getting the App page. As of now, the password manager feature of the app is available as a public preview. Select Authenticator App from the Choose a method drop-down menu. Make sure to update to the newest version of the Authenticator app before doing so, and enable the autofill feature in-app by going to Settings > Beta > Autofill. In order to enable this function, you need to make Microsoft Authenticator the default autofill provider in Settings, and then it will automatically save your passwords after each new use. Microsoft Authenticator has recently expanded to additionally serve as a password manager for Microsoft accounts, through which it can securely autofill passwords used for sites and apps on your mobile device. Microsoft Authenticator as a password manager
