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

Announcements Arpan Das

06/01/2026 08:42:00 AM

NHSmail Reference: INC46746112

Microsoft Reference: CP1229864

Issue Status: RESOLVED

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

Final Update: 11/02/2026 08:50:00 AM – Microsoft has completed their period of extended monitoring and confirmed the impact is remediated.

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.

Root cause: A portion of infrastructure responsible for Declarative Agents populating prompt responses isn’t processing requests as efficiently as expected, producing an increase in latency and resulting in impact.

Next Steps: Microsoft’s help prevent similar impact in the future, they are further reviewing the underlying cause of this portion of infrastructure not processing requests as expected.