Microsoft 365 Alert – Service Degradation – Microsoft 365 suite – Users may be unable to access Microsoft Copilot or experience degraded functionality with some features – ONGOING

Announcements Arpan Das

05/12/2025 08:26:00 AM

NHSmail Reference: INC46701931

Microsoft Reference: MO1193592

Issue Status: ONGOING

Issue Description: Users may be unable to access Microsoft Copilot or experience degraded functionality with some features.

More Info: Users may be unable to access Microsoft Copilot via:

– copilot.cloud.microsoft
– m365.cloud.microsoft
– Copilot button within the Edge browser
– Microsoft Copilot for Microsoft 365 app (app, client app, Win32 app)
– Microsoft Copilot for Microsoft 365 apps

Users may see the error message “Sorry, I wasn’t able to respond to that. Is there something else I can help with”

Current Update: 09/12/2025 13:51:00 AM – Microsoft have identified an unexpected increase in traffic has resulted in some requests being throttled. They are completing manual adjustments to the load balancing rules to reduce the impact on the most heavily impacted components. While this is ongoing, they are performing targeted restarts on the affected infrastructure to improve availability.

Scope of impact: This issue may affect any user within your organization attempting to access Microsoft Copilot.

Our investigation indicates that the following region(s) are impacted by this issue: United Kingdom, Europe. This information may be updated as our investigation continues.

Additionally, users based within other regions whose organization(s) are located in Europe, may also be affected.

Next update by: Tuesday, December 9, 2025, at 5:30 PM UTC