# Incident with Copilot

- Provider: [GitHub Copilot](https://down.guide/github-copilot)
- Level: confirmed
- Impact: Degraded
- lasted 0m
- started 2026-05-19 05:30 UTC
- id: DWN-2630b45c76
- Official page: https://stspg.io/933s0plq1vyv

## Updates from GitHub Copilot
### 2026-05-19 05:30 UTC: resolved
On May 19, 2026, between 05:30 UTC and 14:50 UTC, some Copilot users experienced failures when using code completions, chat sessions, and cloud agent sessions. At peak impact, approximately 13% of Copilot API requests failed, and approximately 24% of remote sessions failed to initialize. A partial mitigation at 08:16 UTC reduced the Copilot API error rate to approximately 0.3%, but intermittent failures persisted until a full fix was deployed at 14:15 UTC and recovery was verified by 14:50 UTC.
The incident was caused by rate limits being exceeded on a shared infrastructure component. A recently enabled feature increased call volume to this component, and the combined load exceeded capacity limits as traffic increased during business hours.
We mitigated the incident by deploying a caching layer to reduce load on shared infrastructure. To prevent recurrence, we are separating rate limit scopes between services, adding monitoring for internal dependency rate limiting, and reducing redundant calls.

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