Microsoft Authenticator: passwordless sign-in for work accounts
Does what the others do, plus approves Microsoft sign-ins with a tap. Weighs 223 MB — nearly six times Google Authenticator.
Standard TOTP codes are here and work with any service. But the reason to choose this one is narrower: for Microsoft accounts it replaces the password with a notification you approve.
689,907 ratings at 4.7.
Who it fits
Anyone whose work email runs on Microsoft 365, or who signs into Windows with a Microsoft account. There the app removes the need to remember a password at all.
Without a Microsoft account you get the heaviest code generator in the category and nothing beyond it.
About the size
223 MB against 39 for Google Authenticator. The bulk goes to device management and passwordless sign-in, not to the codes themselves.
Common questions
- Is Microsoft Authenticator available on Android?
- Yes, the app ships for both iPhone and Android. We last checked both stores on September 1, 2026.
- What languages does Microsoft Authenticator support?
- Of the languages this site covers, the App Store lists: English, German, Russian, Spanish. The store page shows the full list for your region.
- Is Microsoft Authenticator free?
- Microsoft Authenticator is free outright: no subscription and no in-app purchases are listed in the App Store.