Companies/GitHub/Incidents

GitHub: Incident with Copilot

Timeline of updates

1. resolved2026-05-19 05:30 UTC

   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.

From GitHub’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

Impact, status and times are the vendor’s own, as last archived. View on www.githubstatus.com (opens in new tab).

GitHub profileRecent GitHub incidentsAll outages on May 19, 2026GitHub in May 2026MarkdownJSON