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GitHub Copilot: Incident with Actions
GitHub Copilot · github.comImpact: majorResolved2026-08-18 10:23 UTC
Public — what happened
Summary
On August 18, 2026, between 05:02 UTC and 11:30 UTC, customers were unable to run jobs on Actions Larger Runners and were unable to view or manage Actions Runners and Runner Groups through the GitHub UI and API. <br /><br />These issues were caused by failures in backend requests resolving essential metadata for starting Larger Runner workflow runs and for reading runner and runner group data. The failures were caused by an expired authentication certificate unique to this service. The certificate had been rotated in KeyVault, but a step to enable use at runtime had been paused to prevent recurrence of previous incidents that had been triggered by this operation. <br /><br />We mitigated the
Timeline
- Started — 2026-08-18 09:36 UTC
- Last update — 2026-08-18 10:23 UTC
- Resolved — 2026-08-18 10:23 UTC
With SquidGrid — where it starts on the route
Independent path health
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