Feb 6, 2023

Users may become stuck and see repeated sign-in prompts when using iOS Mobile Application Management (MAM) applications

Status: Service Restored

Impacted services: Microsoft Intune

Details

Title: Users may become stuck and see repeated sign-in prompts when using iOS Mobile Application Management (MAM) applications

User impact: Users may have been stuck in a loop of repeated sign-in prompts when using iOS MAM applications.

More info: The majority of affected users were on iOS version 16.3.

Admins and developers of iOS MAM applications can use the following links to update relevant SDK and wrapper tools for affected iOS MAM applications:

https://github.com/msintuneappsdk/ms-intune-app-sdk-ios/releases

https://github.com/msintuneappsdk/intune-app-wrapping-tool-ios/releases

Users need to update their Outlook iOS app to version 4.2303.1 to receive the fix. Users need to launch the updated Outlook app first before any other MAM app to prevent impact from reoccurring.

Final status: We've received confirmation that the fix is now available on the Apple App Store. Users need to update their Outlook iOS app to version 4.2303.1 to receive the fix, and users need to launch the updated Outlook app first before any other MAM app to prevent impact from reoccurring.

Scope of impact: Some users who were attempting to log in using iOS MAM applications were affected.

Start time: Monday, January 23, 2023, at 12:00 AM UTC

End time: Saturday, February 4, 2023, at 8:00 PM UTC

Root cause: A data accessing issue within iOS MAM applications was preventing the application from retrieving new policies from the Microsoft Intune service which in turn was blocking user access to the applications.

Next steps:

- We're reviewing out iOS MAM application components to better understand how the data access issue began, which will help us prevent similar impact in the future.

This is the final update for the event.