Setup Multi Factor Authentication (MFA) for Office 365

Modified on Mon, 13 May 2024 at 11:13 AM

TABLE OF CONTENTS

Introduction
Getting Started
Setup Set up text messages as MFA

Introduction

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.

Click here to watch the video: Turn on multifactor authentication

Getting Started

Sign in to Microsoft 365 with your work or school account with your password like you normally do. After you choose Sign in, you'll be prompted for more information.
Choose Next.
The default authentication method is to use the free Microsoft Authenticator app. 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.

If you would rather use SMS messages sent to your phone instead, select I want to set up a different method. Microsoft 365 will ask for your mobile number, then send you an SMS message containing a 6-digit code to verify your device.

Tip: For a faster, and more secure, experience we recommend using an authenticator app rather than SMS verification.
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 or sent to you by text message.

Setup Set up text messages as MFA

Depending on your organization’s settings, you might be able to use text messaging as one of your security info methods. The text message option is a part of the phone option, so you'll set everything up the same way you would for your phone number, but instead of having Microsoft call you, you'll choose to use a text message.

Click here to learn more.