Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may experience PowerPoint slide download failures during Microsoft Teams meeting recordings – ONGOING

04/02/2026 16:00:00 PM

NHSmail Reference: INC46742176

Microsoft Reference: TM1226855

Issue Status: ONGOING

Issue Description: Users may experience PowerPoint slide download failures during Teams meeting recordings.

More info: Users’ PowerPoint slide download failures is resulting in unauthorized access errors and service unavailability.

As a workaround, users should avoid PowerPoint Live and instead use regular screen sharing, which will be captured in recordings.

Current Update: 04/02/2026 16:22:00 AM – Microsoft are reverting a recent deployment, which introduced a new network authentication component configuration, which has caused unauthorised errors for partner services such as the recorder.They are also working to issue a new compatible network authentication component configuration to resolve the incompatibility that triggered the failures, and aim to provide a remediation timeline by their next scheduled update.

Scope of impact: Your organization is affected by this event, and some users attempting to utilize PowerPoint slide download failures during Microsoft Teams meeting recordings may be impacted.

Root cause: The PPT (PowerPoint Live) conversion service deployed new certificates that were not compatible with previous components, resulting in impact.

Next update by: Thursday, February 5, 2026, at 4:00 AM UTC