Microsoft 365 authentication changes

This notice appeared in the Weekly Phoenix between September 20, 2022 and October 1, 2022.

September 20, 2022

On Saturday, Oct. 1, Microsoft will permanently disable Basic Auth in Microsoft 365 to improve security. This means that some applications that only support the old Basic Auth method for authenticating to Microsoft 365 will no longer work. This may particularly affect non-Microsoft calendaring, scheduling, and email apps on mobile devices. 


Technology Services recommends that if you are affected by this change, use the Microsoft Outlook client to access your Florida Poly email and calendar or another client that supports Modern Auth.  

What are some examples of applications that may no longer work? 

Common applications that might use Basic Auth include older mail or calendar clients on mobile devices. A specific example that does not support Modern Auth is iOS Mail on iOS 11 and under.  

How to tell if your application supports Modern Authentication? 

Many vendors will list if they support Modern Auth in their documentation. Common applications that are known to work include the latest version of Microsoft Outlook, Samsung Email, and iOS Mail. 

Where can I find out more information? 

Microsoft posted a lengthy blog post on this topic, which can be found on their tech community site. 

If you have any questions or concerns, please email the Helpdesk or call 863-874-8888.