This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.
Posted Jan 26, 2026 - 23:51 UTC
Update
At 23:45 UTC we applied a mitigation to take remaining impacted capacity offline and are seeing improvement. We will update again once we've confirmed the issue is resolved.
Posted Jan 26, 2026 - 23:49 UTC
Update
Our investigation into GitHub Actions 4 Core Windows runner failures in public repositories is ongoing.
If you have a failing GitHub Actions run, please retry it and it is likely to succeed.
Posted Jan 26, 2026 - 23:04 UTC
Update
We're continuing to investigate failures in GitHub Actions 4 Core Windows runners in public repositories.
If you have a failing GitHub Actions run, please retry it and it is likely to succeed.
Posted Jan 26, 2026 - 22:02 UTC
Update
Rollback has been completed, but we are still seeing failures on about 11% of GitHub Actions runs on 4 Core Windows runners in public repositories.
If your workflow fails to start, try re-running and it is likely to work a second time.
Posted Jan 26, 2026 - 21:20 UTC
Update
Mitigation for failing GitHub Actions jobs on 4-Core Windows runners is still being mitigated. You should start to see more runs succeeding. If you do see failing runs, please retry and they might succeed.
Posted Jan 26, 2026 - 20:10 UTC
Update
We've applied a mitigation to unblock running Actions. A regression occurred for Windows runners in public repositories which caused Actions workflows to fail. A mitigation is in place and customers should expect to see resolution soon.
If you have a failing Actions workflow on a Windows runner, please retry and it is likely to work.
Posted Jan 26, 2026 - 19:32 UTC
Investigating
We are investigating reports of impacted performance for some GitHub services.