After you have enabled MFA on your tenant, your users can follow these instructions to set up their second sign-in method for Office 365:

Step 1: Set up 2-step verification for Office 365

Once your admin enables your organization with 2-step verification (also called multi-factor authentication), you have to set up your account to use it.

By setting up 2-step verification, you add an extra layer of security to your Office 365 account. You sign in with your password (step 1) and a code sent to your phone (step 2).

  1. Sign in to Office 365 with your work or school account with your password like you normally do. After you choose Sign in, you’ll see this page:

    First Sign in screen

  2. Choose Set it up now.
  3. Select your authentication method and then follow the prompts on the page. Or, watch the video to learn more.

    Choose your authentication method and then follow the prompts on the screen.

  4. Once you complete the instructions to specify how you want to receive your verification code, the next time you sign in to Office 365, you’ll be prompted to enter the code that is sent to you by text message, phone call, etc.

    To have a new code sent to you, press F5.

    When you sign in with 2-step verification, you'll be prompted for a code.

We strongly recommend setting up more than one verification method. For example, if you travel a lot, consider setting up Microsoft Authenticator for your verification method. It’s the easiest verification method to use, and a way to avoid text or call charges.

Step 2: Create an app password for Office 365

An app password is a code that gives an app or device permission to access your Office 365 account.

If your admin has turned on set up 2-step verification for your organization, and you’re using apps that connect to your Office 365 account, you’ll need to generate an app password so the app can connect to Office 365. For example, if you’re using Outlook 2016 or earlier with Office 365, you’ll need to create an app password.

  1. Check whether your Office 365 admin has turned on 2-step verification for your account. If they haven’t, when you try to do these steps you won’t see the options in Office 365.
  2. If you haven’t already done so, set up your account to use 2-step verification.
  3. Sign in to Office 365 using your password and verification code.
  4. Choose Settings Office 365 Settings button > Office 365.
  5. Choose Security & Privacy > Additional security verification.

    Choose Additional security verification.

  6. Choose Update my phone numbers used for account security. This will display the following page:

    Choose app passwords

  7. At the top of the page, choose App Passwords.
  8. Choose create to get an app password.
  9. If prompted, type a name for your app password, and click Next.
  10. Choose copy password to clipboard. You won’t need to memorize this password.

    Choose copy to your clipboard.

    Tip: If you create another app password, you’ll be prompted to name it. For example, you might name it “Outlook.”

  11. Go to the app that you want to connect to your Office 365 account. When prompted to enter a password, paste the app password in the box.

To use the app password in Outlook

You’ll need to do these steps once.

  1. Open Outlook, such as Outlook 2010, 2013, or 2016.
  2. Wherever you’re prompted for your password, paste the app password in the box. For example, if you’ve already added your account to Outlook, when prompted paste the app password here:

    Paste your app password in the Password box.

  3. Or, if you’re adding your Office 365 account to Outlook, enter your app password here:

    Enter your app password in both Password boxes.

  4. Restart Outlook.

Step 3: Change how you get 2 step verification

Depending on how your Office 365 admin set up 2-step verification for your organization, you might be able to change how you get your codes.

Tip: Before you can do these steps, your admin needs to set up multi-factor authentication for your account.

  1. Sign in to Office 365 using your password and verification code.
  2. Choose Settings Office 365 Settings button > Office 365.
  3. Choose Security & Privacy > Additional security verification.
  4. Choose Update my phone numbers used for account security. This will display the following page:

    additional security verification page

  5. Choose how you want to get your verification code. Although all options are listed, your admin may not make them all available; you’ll get a message if you choose one your admin didn’t enable.
  6. Follow the prompts on the page.

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