Microsoft 365 Alert – Service Degradation – Microsoft Copilot (Microsoft 365) – Some users in Europe may be intermittently unable to utilise Microsoft 365 Copilot experiences – RESOLVED

28/01/2026 08:38:00 AM

NHSmail Reference: INC46734722

Microsoft Reference: CP1222783

Issue Status: RESOLVED

Issue Description: Users in Europe may have been intermittently unable to utilise Microsoft 365 Copilot experiences.

More info: Delays are specific to open-ended questions in the meeting chat from the meeting participants to the Facilitator agent.

Final Update: 28/01/2026 08:38:00 AM – Microsoft have identified that a portion of Azure OpenAI request processing infrastructure became unhealthy, which resulted in request failures and latency for Microsoft 365 Copilot services. To remediate this, we redirected traffic to alternate healthy infrastructure and, after monitoring the service, verified that the issue has been successfully resolved.

Scope of impact: Some users located in Europe attempting to utilise Microsoft 365 Copilot experiences may have been intermittently impacted.

Root cause: A portion of Azure OpenAI request processing infrastructure became unhealthy, which resulted in request failures and latency for Microsoft 365 Copilot services.

Next steps: Microsoft are investigating how the portion of Azure OpenAI request processing infrastructure became unhealthy, resulting in request failures and latency for Microsoft 365 Copilot services to prevent this problem from happening again