Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users are unable to join Microsoft Teams live events or town hall events – RESOLVED

Announcements Sourav Nandi

18/04/2024 09:05:00 AM

NHSmail Reference: INC42530759

Microsoft Reference: TM779788

Issue Status: RESOLVED

Issue Description: Users are unable to join Microsoft Teams live events or town hall events.

More info: The issue impacts customers who have eCDN (Enterprise Content Delivery Network) enabled, as this issue occurs when there are errors encountered while loading the eCDN scripts. If the eCDN scripts are loaded successfully, users don’t experience this issue

Final Update: 22/04/2024 08:35:00 AM – The extended validation process for the fix completed, and Microsoft have deployed the fix to all affected environments. They have confirmed after monitoring service telemetry that impact has been remediated.

Scope of impact: Your organization is affected by this event, and any user attempting to join Microsoft Teams live events or town hall events will be impacted.

Root cause: A recent service update is causing connection failures with Microsoft Teams live events and town hall events.

Next steps: Microsoft are reviewing the recent service update to understand why it was causing connection failures for Microsoft Teams live events and town hall events, so they can prevent similar issues from occurring in the future.