Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users see up to six-hour delays for Microsoft Teams messaging change notifications with third-party app integrations – RESOLVED

Announcements Arpan Das

20/03/2025 08:55:00 AM

NHSmail Reference: INC46481607

Microsoft Reference: TM1036828

Issue Status: RESOLVED

Issue Description: Users see up to six-hour delays for Microsoft Teams messaging change notifications with third-party app integrations

More info: The impacted scenarios include messaging, chats, and channels. For more information about change notifications for messages in Teams channels and chats using Microsoft Graph, please refer to the following documentation: https://learn.microsoft.com/en-us/graph/teams-changenotifications-chatmessage

Final Update: 21/03/2025 08:57:00 AM – Microsoft’s have validated through our telemetry that the backlog of messages finished processing and that the impact was remediated.

Scope of impact: Your organization is impacted by this event, and users see up to six-hour delays for Microsoft Teams messaging change notifications with third-party app integrations.

Root cause: An upstream traffic management issue is impacting Microsoft Teams messaging change notifications with third-party app integrations.

Next Steps: Microsoft are reviewing their traffic routing and management infrastructure to find ways to prevent similar impact from occurring in the future.