Microsoft 365 Alert – Service Degradation – Microsoft Copilot (Microsoft 365) – Users interacting with Microsoft Copilot (Microsoft 365) see delays up to four minutes in responses – RESOLVED

22/01/2026 08:48:00 AM

NHSmail Reference: INC46730367

Microsoft Reference: CP1220531

Issue Status: RESOLVED

Issue Description: Users interacting with Copilot saw delays up to four minutes in responses.

More info: This issue affected Copilot responses in all Microsoft 365 services and apps, including Microsoft Teams Facilitator. Response delays ranged from 50 seconds to four minutes.

Final Update: 22/01/2026 08:49:00 AM – A high utilization event temporarily caused parts of our infrastructure to become unhealthy. While we were reviewing this event to determine why it had occurred, traffic was redistributed across healthy portions infrastructure and we confirmed that service was restored after monitoring the telemetry.

Scope of impact: This issue may have impacted any prompts users sent to Copilot or services that leverage Copilot responses, such as Microsoft Teams Facilitator.

Root cause: A high utilization event temporarily caused parts of our infrastructure to become unbalanced when attempting to handle traffic load, which resulted in delays.

Next steps: Our review of the high resource utilization event continues so we can improve our automation’s response time to such events and reduce delays or avoid the issue altogether.