GitHub experience various partial-outages/degradations
2 days ago
- #Windows runners
- #GitHub Actions
- #incident report
- GitHub Actions experienced job failures on Windows standard hosted runners on Jan 26, 2026, due to a missing D: drive in a new runner type.
- About 2.5% of Windows standard runner jobs were affected, with re-runs having a high success rate.
- Mitigation involved rolling back the faulty configuration and removing affected runners.
- Improvements include expanded runner telemetry and better validation of configuration changes.
- Updates were provided throughout the day, with mitigations applied and improvements observed by 23:45 UTC.