GitHub change history: Several services are degraded

GitHub’s critical incident degraded Pull Requests and Webhooks and paused enterprise migrations, starting 2026-10-06 19:57 UTC and resolving 2026-10-06 23:40 UTC (3 h 43 min). GitHub reported an outage from 19:44 to 19:50 UTC affecting 12 services, with approximately 1.16 million failed requests. It identified GitHub Enterprise Importer as the trigger and reported deploying a mitigation.