Resolved
The issue with Apple Mail on Intune-registered devices has been resolved. If you have any questions, please contact your local Office of Information Technology Help Desk.
Update
OIT is issuing a fix for the Apple Mail issue on Intune-registered devices. OIT will continue to monitor and provide additional updates as they become available.
Update
OIT teams continue to investigate the issue affecting Apple Mail on Intune-registered devices. Users experiencing issues should continue using Outlook from the Intune Company Portal to access email on their Apple devices. OIT will provide more information as it becomes available.
Investigating
Users are reporting login errors and authentication loops when accessing their Microsoft 365 email account through Apple Mail on Intune-registered devices. Users can download Outlook from Intune Company to access email from their Apple devices until the Apple Mail issue is resolved. IT teams are currently investigating the issue and will provide more information as it becomes available.