Microsoft 365 Alert – Service Degradation – Planner – Users are unable to create new Task Chats in Microsoft Planner in Microsoft Teams – RESOLVED

Announcements Shagufta Naaz

15/04/2026 08:19:00 AM

NHSmail Reference: INC46798263

Microsoft Reference: PL1279364

Issue Status: RESOLVED

Issue Description: Users are unable to create new Task Chats in Microsoft Planner in Microsoft Teams.

More info: Existing Task Chats are unaffected.

While we’re focused on remediation, users will be able to create new Task Chats through Planner on the web.

Current Update: 06/05/2026 09:22:00 AM– The deployment of Microsoft’s fix has propagated throughout the affected service environment and after an extended period of monitoring the service health telemetry, they have confirmed that this issue has been resolved.

Scope of impact: Your organization is affected by this event, and the issue impacts any user attempting to create new Task Chats in Planner in Teams. This information may be updated as our investigation continues.

Root cause: A code issue with a recent service update that is specifically impacting Task Chats in Planner in Teams.

Next Steps: Microsoft are continuing to analyze how the code issue contained within the service update manifested to understand why the potential for impact wasn’t caught during the update testing and validation phase. These actions will help us to clarify what actions they can take to ensure similar impact doesn’t occur in future and to continue their ongoing mission to improve the resilience of their service for all Microsoft Planner users.