Download Microsoft Authenticator for free
Microsoft Authenticator Two-factor authentication (TFA) is easy, convenient, and secure when using the Microsoft Authenticator. Use your phone, not your password, to log into your Microsoft account. All you have to do is enter your username and then accept the notification sent to your phone. A fingerprint, face, or personal identification number (PIN) will provide a second layer of security in the two-step verification process. After signing in with two-factor authentication (TFA), you will have access to all Microsoft products and services such as Outlook, OneDrive, Office, and more.
Microsoft Authenticator also supports multi-factor authentication (MFA) even when you're still using a password, by providing a second layer of security after entering your password. When logging in with two-factor authentication (TFA), you will enter your password and after that you will be prompted for an additional method to verify your identity. You must accept the notification sent to the Microsoft Authenticator or enter the One Time Password (OTP) that the app generates. One-time passwords (OTP codes) have a 30-second countdown timer. Codes expire after 30 seconds for security reasons. The One Time Password (OTP) does not require you to be online and it will not drain your battery.
You can add multiple accounts to your app, including non-Microsoft accounts like LinkedIn, Github, Amazon, Dropbox, Google, Facebook, and more. Since the app supports the industry standard of Time Limited One Time Password (TOTP), you can protect all of your online accounts. All you have to do is enable two-factor authentication (TFA) on all of your accounts. Then, upon logging in, you will provide your username and password as usual. Finally, you will enter the One Time Password (OTP) that was provided by the Microsoft Authenticator app.
Sometimes your work or school account might ask you to install Microsoft Authenticator when accessing certain files, emails, or apps. You will need to register your device with your organization through the app and add your work or school account. Microsoft Authenticator also supports certificate-based authentication by issuing a certificate for your device. This will let your organization know that the sign-in request is coming from a trusted device and help you secure and seamless access to additional Microsoft apps and services without having to sign in to each of them. Since Microsoft Authenticator supports single sign-on, once you confirm your identity once, you will not need to sign in to other Microsoft applications on your device again.
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