Use your phone, not your password, to log into your Microsoft account. You can add multiple accounts to your app, including non-Microsoft accounts like Facebook, Amazon, Dropbox, Google, LinkedIn, GitHub, and more. The OTP doesn’t require you to be connected to a network, and it won’t drain your battery. This timer is so you never have to use the same time-based one-time password (TOTP) twice and you don’t have to remember the number. Either approve the notification sent to the Microsoft Authenticator, or enter the one-time password (OTP) generated by the app. The OTP codes have a 30 second timer counting down. When enabled, during login after entering your password, you’ll be asked for an additional way to prove it’s really you.

Multi factor authentication (MFA)provides a second layer of security.

Getting started with multi-factor authentication

You also have additional account management options for your Microsoft personal, work or school accounts. Use Microsoft Authenticator for easy, secure sign-ins for all your online accounts using multi-factor authentication, passwordless, or password autofill.

Ms auth app