When you sign into your online accounts - a process we call "authentication" - you're proving to the service that you are who you say you are. You may hear it called "Two-Step Verification" or "Multi-factor Authentication" but the good ones all operate off the same principle. When you sign into the account for the first time on a new device or application (like a web browser) you need more than just the username and password. You need a second thing - what we call a second "factor" - to prove who you are.

By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.

Initially, when you Sign in to Microsoft 365 with your work account with your credentials, you'll be prompted for more information.

Click Next. The default authentication method is to use the free Microsoft Authenticator app. It is highly recommended to have it installed in your mobile device. If you have it installed on your mobile device, select Next and follow the prompts to add this account. If you don't have it installed there is a link provided to download it. You may also search for it in the App store (Apple) and Playstore (Android)

Playstore :

App store:

For more information on setting up Microsoft Authenticator, please see this article :


Once you complete the instructions to specify your additional verification method, the next time you sign in to Microsoft 365, you'll be prompted to provide the additional verification information or action, such as typing the verification code provided by your authenticator app

NOTE : Generally you'll only need the additional verification method the first time you sign into a new app or device, or after you've changed your password. You probably won't be asked for the additional verification code on a daily basis, unless your organization requires it.

Alternatively, In case you sign in to your Microsoft account and not prompted of adding the 2FA authentication, please check info below,

Sign in to your work account go to login.microsoftonline.com.

It should take you to this page below, click the upper left most button on the screen (may display your initials, as set up by your IT admin) then click View Account, as shown below:

After clicking View account, it will take you to this page shown below, then click Security Info

It will take you to this page (image below) , click Add sign -in Method button:

Select Authenticator App then click Add, then click Next
*TIP: For a faster, and more secure, experience we recommend using an authenticator app rather than SMS verification.

Follow the prompts and instructions from here. You can also visit and check this article for more information on setting up the Microsoft Authenticator from start to finish.

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