Microsoft 365 Alert – Service Degradation – Microsoft Copilot (Microsoft 365) – Users can’t access the Microsoft Copilot (Microsoft 365) app in Microsoft Teams classic and receive an error – RESOLVED

16/01/2025 09:31:00 AM

NHSmail Reference: INC48068531

Microsoft Reference: CP979721

Issue Status: RESOLVED

Issue Description: Users can’t access the Copilot app in Microsoft Teams classic and receive an error.

Final Update: 13/02/2025 08:35:00 AM Microsoft have completed the deployment of the fix, and they’ve confirmed this has remediated impact.

Scope of impact: Organization is affected by this event, and any user attempting access to the Copilot app in Microsoft Teams classic is impacted.

Root cause: An authentication component that facilitates users’ access to the app wasn’t extended to Microsoft Teams classic.

Next steps: Microsoft are reviewing authentication component extension processes to ensure to that similar issues affecting Copilot access in Microsoft Teams are prevented in the future.

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