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The Microsoft Authenticator supports a variety of authentication mechanisms to support Microsoft consumer, work and school accounts in different modes, as well as any account which supports the OATH TOTP standard.įor accounts using the OATH TOTP standard, there is a shared secret stored both in the Authenticator app and in the identity provider.įor accounts using other mechanisms, the Authenticator creates a public/private keypair in a hardware backed storage (e.g. Overview of how the Microsoft Authenticator works In the descriptions below, a “strong authentication token” means the user has authenticated using multi factor authentication - for example, they used a password and then entered a code sent to their phone or email or signed in with Windows Hello or a FIDO token, depending on the factors they have previously enabled.

Some folks have asked how we secure this process – in this blog, we’ll deep dive into how it works. Hello! With the dust settling from Ignite 2019, let’s dive in with “how stuff works” – focusing on the Microsoft Authenticator’s backup and restore feature.Įarlier this year we released the Microsoft Authenticator backup and restore feature on iOS and Android, which lets you easily move your accounts on the Authenticator app to a new device.