If you need to re-enable 2FA or maybe even re-set it up because of some kind of change like a new device or domain, you can use this guide to get you started.

If your Global Admin for Office 365 has forced you to use Office 365, some of these steps will automatically happen such as triggering the setup process for 2-FA

What is 2-FA? (Two-Factor Authentication)

It’s a simple practice the banks have been doing since the invention of a bank card and the PIN, the setup is the same as well. Two Factor is something you have (your Bank Card) and something you know (Your bank PIN). In this case for signing into web services, the something you have is a Smartphone APP like Microsoft Authenticator, Duo Mobile or another option and something you know (your password for the service your signing into)

Step 1:

Nice and easy: Sign in to Office 365 at https://office.com You should have your login from your IT Administrator (Hi!) or whoever is in charge of your office 365 system.

Step 2:

Once signed in you want to go to your profile, if you don’t have a picture uploaded yet it is usually just your initials. It’s in the very top right corner of the web window.

Click the picture (or letters) and a panel will slide out from the right, you want to then click “My Account”

Step 3:

Once inside my account settings, you want to click “Manage Security & Privacy”, then click on “Additional Security Verification” and then “Update your phone numbers used for account security” All three steps in the images below

Step 4:

In the tab that opens up, you will need to remove and re-add your authenticator app under the new device. If you changed your original sign-in name (maybe you got married, congrats!) You will also have to do this process.

1. Click the “Delete” Button beside the device you want to remove

2. After it removes, go to your authenticator app on your phone and remove the account as well

3. Click “Set Up Authenticator App” and follow the instructions

4. Hit Save, you will need to re-verify your authentication options.

That's it!

You have re-setup your 2FA device for your account and you can sign back in. If you get stuck, your Global Administrator can force a reset of your 2FA system so you can get into your account and reconfigure what you need.


If you’re stuck, don’t hesitate to reach out to us, we can help!

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