💡 Our Technical Review in summary
Summary: Microsoft 365 Copilot Chat experienced a service disruption on January 29, 2026, where a performance degradation in the Microsoft API service infrastructure prevented users from generating responses. The issue was mitigated by temporarily increasing performance parameters for the affected infrastructure.
Impact:
- Service: Microsoft 365 Copilot Chat.
- User Experience: Affected users were unable to receive AI-generated responses and typically encountered the error message: “Something went wrong. Please try again.”
- Scope: Primarily impacted users located in Europe.
- Duration: The incident occurred between 9:20 AM UTC and 2:00 PM UTC.
Status: Service Restored. Microsoft has successfully mitigated the impact, and service levels have returned to normal. Engineering teams are currently conducting a deep-dive analysis of the API infrastructure to identify the root cause of the performance drop and implement permanent preventative measures.
Microsoft Official Issue Details
User Impact
Users using Copilot Chat may not have seen any responses being generated.
Status: serviceRestored
Service: Microsoft 365 Copilot Chat
Classification: incident
Origin: microsoft
Updates
- 2026-01-29 14:14
Title: Some users using Microsoft 365 Copilot Chat may have not seen any responses being generatedUser impact: Users using Copilot Chat may not have seen any responses being generated.
More info: Users may have seen the following error message “Something went wrong. Please try again.”
Final status: We’ve determined that a section of Microsoft API service infrastructure had dropped below our manageable service performance thresholds, producing failures for users generating responses for Copilot Chat. While we further investigate the source for the lower-than-expected service infrastructure performance levels, we’ve temporarily increased performance parameters to mitigate impact.
Scope of impact: Some users attempting to generate responses within Copilot Chat in the Europe may have been impacted.
Start time: Thursday, January 29, 2026, at 9:20 AM UTC
End time: Thursday, January 29, 2026, at 2:00 PM UTC
Root cause: A section of Microsoft API service infrastructure had dropped below our manageable service performance thresholds, producing failures for users generating responses for Copilot Chat.
Next steps:
– We’re further analyzing the affected subset of Microsoft API service infrastructure in our effort to isolate the source for the lower-than-normal performance levels, and to help prevent similar issues in the future.This is the final update for the event.
- 2026-01-29 12:25
Title: Some users using Microsoft 365 Copilot Chat may not see any responses being generatedUser impact: Users using Copilot Chat may not see any responses being generated.
More info: Users may see the following error message “Something went wrong. Please try again.”
Current status: We’ve received reports indicating users may be unable to generate responses within Copilot Chat. We’re reviewing service monitoring telemetry to isolate the root cause and determine our next troubleshooting steps.
Scope of impact: Some users attempting to generate responses within Copilot Chat in the Europe may be impacted.
Next update by: Thursday, January 29, 2026, at 2:30 PM UTC
