In November, we experienced three incidents that resulted in degraded performance across GitHub services.

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GitHub experienced three service incidents in November 2025. On November 17, Dependabot hit rate limits in GitHub Container Registry, affecting 57% of jobs. On November 18, an expired TLS certificate caused failures in all Git operations for over an hour. On November 28, a misconfiguration made Claude Sonnet 4.5 unavailable in Copilot for 2.5 hours. Each incident was resolved through targeted mitigations, with GitHub implementing improved monitoring, alerting, and automation to prevent recurrence.

GitHub Availability Report: November 2025