Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may be unable to launch Microsoft Teams on Mac devices post auto-update – RESOLVED

Announcements Arpan Das

09/01/2025 08:54:00 AM

NHSmail Reference: INC47939429

Microsoft Reference: TM974906

Issue Status: RESOLVED

Issue Description: Users may be unable to launch Microsoft Teams on Mac devices post auto-update.

More info: Some users may receive a popup stating “The application bundle is corrupted”. Users can run the application directly from the applications folder and ignore this popup to avoid this issue. Users can also delete the application bundle from the applications folder and install Microsoft Teams again to also resolve impact.

Impact is specific to Microsoft Teams for Mac OS versions 13.7.2, 14.7.2, and 15.2.

Final Update: 17/01/2025 08:38:00 AM – The fix deployment has completed, and after a period of monitoring, Microsoft have confirmed impact was remediated.

Scope of impact: This issue can potentially affect any user who was automatically updated to Microsoft Teams for Mac OS versions 13.7.2, 14.7.2, and 15.2.

Root cause: A third-party update contains a code error that’s resulting in auto-updates to Microsoft Teams for Mac to become corrupted.

Next Steps: To help prevent similar impact in the future, Microsoft have further reviewing the underlying reason this code error led to updates being corrupted.