GitHub Copilot change history: Several services are degraded

GitHub reported a critical outage affecting Pull Requests, Webhooks and other services, with approximately 1.16 million failed requests. The incident started at 2026-10-06 19:57 UTC and resolved at 2026-10-06 23:40 UTC, lasting 3 h 43 min. Enterprise migrations remained paused after other services recovered; GitHub reported deploying a mitigation.