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Use Microsoft Authenticator for easy, secure sign-ins for all your online accounts using multi-factor authentication or passwordless.
By Kelvin Ooi
Security and privacy editor
Microsoft Authenticator is a two-step verification app from Microsoft. It handles the second step of a login: after you type a password, it confirms that the person signing in is you, and it can also manage Microsoft personal, work and school accounts.
The second step takes one of two forms. You either type in a short code the app shows, or you approve a notification on your phone.
When a site asks for a code, the app shows a one-time password that counts down on a 30-second timer. Each code expires, so you never reuse one and do not need to memorize it. According to the listing, the codes work without a network connection.
The build we hold is Microsoft Authenticator 6.2609.6214 (APK) for Android 8.0 and up.
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Where a sign-in sends a notification, you approve it on the phone and type nothing. The listing says accounts can be added for non-Microsoft services including Facebook, Amazon, Dropbox, Google, LinkedIn and GitHub, among others.
For a Microsoft account, you can skip the password. You enter your username, then approve the prompt on your phone with a fingerprint, face unlock or PIN. The listing says that sign-in gives access to Outlook, OneDrive, Office and other Microsoft services.
Single sign-on means that once you have proven your identity, you do not have to sign in again to other Microsoft apps on the same device.
An employer or school can ask for the app when you open certain files, email or apps. You register your device with the organization through the app and add your work or school account.
The app can also issue a certificate on the device, which tells the organization that a sign-in request comes from a trusted device. Some organizations also check location before granting access, where their policy requires it.