Forum Discussion
Office 365 MFA Enabled Users and the Apple Mail app for iOS Concern
JPSAndyJ I'm the IT manager for our company. We have BYOD device policy for most of the iPhone users and only certain employees on InTune. We have had numerous issues which are still ongoing. Due to repeated breakin attempts I had to enact a stricter authentication policy which blocked basic authentication. Users began reporting issues, and even before one user who had limited admin rights had issues with his device and MFA. I have a work around for the recent issues where the iPhone asks for a password using basic auth. Open another iPhone application which forces the use of modern authentication, either Teams or Outlook for iOS. This will then authenticate and the password prompt from the native mail app will go away. For the MFA user I had to remove their profile and add it back. Then use this same method to force modern authentication. Try that.
Jim_Hill that's a very good point and I'm glad you brought it up.
Modern Auth with O365 works around the premise of "authentication tokens" and I believe once a user's phone has said token, they can authenticate with virtually any aspect of the O365 platform.
So yes, authenticating with any app that requires Modern Authentication should authenticate with every O365 service on that device.