Microsoft 365 Alert – Service Degradation – Microsoft Viva – Users may notice missing Microsoft Copilot impact trend data in the Microsoft Viva Insights portal – ONGOING

10/11/2025 09:38:00 AM

NHSmail Reference: INC46676584

Microsoft Reference: MV1179108

Issue Status: ONGOING

Issue Description: Users may notice missing Microsoft Copilot impact trend data in the Microsoft Viva Insights portal.

More info: Impact is specific to the total email messages sent using Copilot trend data between Tuesday, July 1, 2025, and Tuesday, October 7, 2025.
This data doesn’t apply to Copilot Assisted Hours or Copilot Assisted Value so those reports are unaffected.

Current Update: 02/12/2025 09:30:00 AM – Microsoft have completed their data processing for email messages sent using Copilot trend data in October 2025 and have progressed to messages sent during September 2025. As they continue with their mitigations, they are working with affected users to determine if their data processing is remediating the impact or if any additional actions will be required.

Scope of impact: All users accessing Copilot trend data in the Microsoft Viva Insights portal are affected.

Root cause: A change to event-based logic in data provided by Exchange Online contains a code error, preventing the Viva Insights service from accessing the relevant data, resulting in impact.

Next update by: Thursday, December 4, 2025, at 11:00 PM UTC