What Happened

GitHub experienced an outage on June 4, 2026. The incident lasted approximately 1 hour 55 minutes.

World's largest source code hosting platform with version control, CI/CD (Actions), code review, project management, and AI coding assistant (Copilot).

Timeline

Time (UTC)StatusDetails
19:41MonitoringThe mitigation for Copilot Code Review is now fully deployed, and new reviews are working as expected.  We are continuing to monitor for full resolution.<br /><br /> Customers may need to re-requ...
19:07MonitoringThe degradation has been mitigated. We are monitoring to ensure stability.
19:07InvestigatingThe mitigation for Copilot Code Review is now fully deployed, and new reviews are working as expected.<br /><br />Customers may need to re-request Copilot Code Review.  Copilot Code Review Actions...
18:52InvestigatingThe mitigation for Copilot Code Review is rolling out and we are seeing early signs of recovery.
18:22InvestigatingWe have identified that Copilot Code Review users may see "Copilot ran into an error" on Pull Requests that requested Copilot Code Review.<br /><br />A mitigation is in progress, we expect mitigati...
18:03InvestigatingWe have identified that Copilot Code Review.  Users may see "Copilot ran into an error" on Pull Requests that requested Copilot Code Review.<br /><br />A mitigation is in progress.
18:02InvestigatingWe are investigating reports of impacted performance for some GitHub services.
20:02ResolvedAll systems operational

Impact

The outage lasted approximately 1 hour 55 minutes. GitHub runs on Azure — check those status pages if you experienced cascading issues.

Resolution

GitHub has recovered and is now operational.

What To Do Next

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