How to Setup MFA for Microsoft 365

Introduction to MFA for Microsoft 365

For Students: Please visit the MFA Setup for Student Email on Microsoft 365 article for instructions.


To improve the EFSC Microsoft Microsoft 365 Login Security, EFSC incorporated Microsoft’s MFA (Multi-Factor Authentication) into our existing Microsoft 365 infrastructure. MFA is a method to help better secure email accounts and Microsoft 365 access. By using MFA, spammers and hackers won’t have access to your email account if your credentials get compromised, since they will not have your mobile device to approve the sign in.

While protected by MFA, Outlook and Microsoft 365 products will prompt you to use the Microsoft Authenticator app or another MFA method when login attempts are made to your account. For example, Outlook on the Desktop and the Outlook mobile app (phone/tablet) will require you to acknowledge and verify your login (one-time). If you use the web browser version of Outlook, you will be prompted for MFA verification each time you login.

Please note that if you access your email, Microsoft 365 products, or use programs that require verification at home, it is NOT recommended to use the Office Phone MFA option as you will not be able to authenticate while away from the location of that phone. 

For assistance with initially setting up MFA for Microsoft 365, and to make changes to your existing options, please review the article(s) below that apply to your chosen MFA method. Students enrolled into MFA should visit the link at the top of this articleHere are the articles available about MFA for Microsoft 365:

Additional Tips and Information


1.  If you start to setup MFA using one method and it does not appear to be working initially, choose a different option in the meantime. These can be changed later in the Security Info area in your Microsoft 365 account (can be accessed at See the Add and Edit MFA Options for Microsoft 365 article for details. Setting up the Microsoft Authenticator app is the most secure and reliable option.

2.  As stated previously, Outlook applications such as the Desktop and Mobile app should only require the one-time verification. Outlook Web will prompt for the verification if you need to log back in after signing out. Password changes will also require verification once again for Microsoft 365 applications.

3.  You may be familiar with how MFA works if you also have it setup for your myEFSC (Titan Sign In) account. Please note that the MFA for Microsoft 365 utilizes a different system (Microsoft).

4.  Consider adding more MFA options for your account if you access it from multiple locations. You may not be able to add every option you want during first time setup, but more can be applied in the Security Info area in Microsoft 365. See the Add and Edit MFA Options for Microsoft 365 article for details. The Microsoft Authenticator app is the preferred option and is recommended to setup as a default, whereas Office phone numbers should only be used as a backup.

5,  If you cannot access your account due to an issue with the MFA verification, contact the IT Support Desk for assistance.



For further assistance, questions, or concerns, please either create a ticket or call the IT Support Desk at 321-433-7600, open 7am to midnight, 7 days a week. After accessing myEFSC, the Open an IT Ticket button can be found in the IT Support section, typically found near the bottom of the page.

When creating a ticket, select the Email, Teams & Calendaring category, followed by the appropriate Email Assistance service to submit a ticket. Please include an alternative contact method (if you cannot access your email). Include details, error messages, and provide screenshots if possible of the steps you have taken so we may further assist you.




Article ID: 134256
Thu 9/9/21 11:04 AM
Tue 8/8/23 2:36 PM