Copilot Code Completions partially unavailable
This summary is created by Generative AI and may differ from the actual content.
Overview
Copilot Code Completions experienced partial unavailability on November 5, 2025, from 21:46 to 23:36 UTC. Ghost text requests encountered errors from upstream model providers, leading to elevated error rates for 0.9% of users. While users were automatically re-routed to healthy model hosts, they may have experienced increased latency. The engineering team identified and resolved the underlying issues, and plans are in place to update monitors and tune failover mechanisms for future mitigation.
Impact
0.9% of Copilot users experienced elevated error rates for ghost text requests, and some users may have experienced increased latency due to automatic re-routing. Copilot Code Completions were partially unavailable during the incident.
Trigger
The incident was triggered by ghost text requests experiencing errors from upstream model providers.
Detection
The incident was detected when the engineering team began investigating reports of degraded performance for Copilot and increased error rates affecting Copilot Code Completions.
Resolution
The engineering team identified and resolved the underlying issues with Code Completions, leading to full recovery for customers. During the disruption, users were automatically re-routed to healthy model hosts. Post-incident, plans include updating monitors and tuning failover mechanisms to more quickly mitigate similar issues in the future.
Root Cause
The root cause was identified as errors originating from upstream model providers that affected ghost text requests for Code Completions. The specific nature of these upstream errors is not detailed in the provided postmortem.