Microsoft 365 Alert – Service Degradation – Microsoft Copilot (Microsoft 365) – Some users’ Declarative Agents in Microsoft Copilot (Microsoft 365) aren’t responding to prompts – RESOLVED

12/02/2026 08:39:00 AM

NHSmail Reference: INC46748147

Microsoft Reference: CP1230749

Issue Status: RESOLVED

Issue Description: Some users’ Declarative Agents in Microsoft Copilot (Microsoft 365) aren’t responding to prompts

Final Update: 13/02/2026 08:48:00 AM – Microsoft has determined that a recent standard service update unintentionally enabled new functionality more broadly than intended, which resulted in higher‑than‑expected service traffic that caused elevated latency and degraded performance for some users. To mitigate impact, they have reverted the aforementioned change and applied service controls to reduce request volume and stabilize performance. They have confirmed with their representatives that the issue is no longer occurring, and service performance has returned to expected levels following extended monitoring.

Scope of impact: Your organization is affected by this event, and some users of Declarative Agents are impacted. This information may be updated as our investigation continues.

Next Steps: Microsoft are reviewing their update procedures to better identify similar issues during our development and testing cycles.