How to Setup and Edit Office 365 Multi-Factor Authentication (MFA)


This guide will assist in setting up an account with Office 365 Multi-Factor Authentication (MFA).  MFA will require you to complete additional authentication when signing into Office 365 resources (this includes web and desktop versions of Outlook, Skype for Business, OneDrive, and more). Where most typical authentication procedures require a username and password only, multi-factor authentication will require you to authenticate your identity using an additional method.

Special Concepts

Office 365 MFA Verification Methods

Microsoft has a set of defined methods you will select in the setup process to provide the additional verification when accessing Office 365 resources:

  • Text message sent to your phone with a code to enter into the verification screen
  • Phone call attempting to authenticate 
  • Mobile app to deny or approve

Once your multi-factor authentication is setup, you will be required to approve any new requests to access your Office 365 account. Some instances of when you will be required to approve MFA requests include:

  • Signing into Outlook, OneDrive, Skype for Business, or another Office 365 application after shutting off your computer,
  • Signing into an Office 365 application on a new device.

Steps to Set up Multi-Factor Authentication Verification Methods

Go to and login with your ISU credentials.

On the MFA page, you will find step-by-step instructions in PDF or video format.

Steps to Edit Multi-Factor Authentication Verification Methods                                                  

  1. Go to and login with your ISU credentials, if prompted for authentication.
  2. Click on "Add Devices" at the bottom of the page, which will open the "Security Info" site.
  3. On the Security Info site, you can click "+ Add Method" to add additional methods or click on "change" to adjust your default notification method.


After following the instructions on the site, your Office 365 Multi-Factor Authentication should be setup and ready to use.

Additional Resources

For additional instructions on setting up Microsoft Authenticator App, go to

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Article ID: 66081
Thu 10/25/18 7:08 PM
Fri 8/28/20 10:36 AM