GitHub Enterprise Cloud US experienced a major incident on June 4, 2026, lasting 1h 56m. The incident has been resolved; the full update timeline is below.
Update timeline
- investigating Jun 04, 2026, 06:02 PM UTC
We are investigating reports of impacted performance for some GitHub services.
- investigating Jun 04, 2026, 06:03 PM UTC
We have identified that Copilot Code Review. Users may see "Copilot ran into an error" on Pull Requests that requested Copilot Code Review. A mitigation is in progress.
- investigating Jun 04, 2026, 06:22 PM UTC
We have identified that Copilot Code Review users may see "Copilot ran into an error" on Pull Requests that requested Copilot Code Review. A mitigation is in progress, we expect mitigation in approximately 30m. GitHub Enterprise Cloud with Data Residency is not impacted.
- investigating Jun 04, 2026, 06:52 PM UTC
The mitigation for Copilot Code Review is rolling out and we are seeing early signs of recovery.
- investigating Jun 04, 2026, 07:07 PM UTC
The mitigation for Copilot Code Review is now fully deployed, and new reviews are working as expected. Customers may need to re-request Copilot Code Review. Copilot Code Review Actions runs running for longer than 20 minutes may be safely cancelled.
- investigating Jun 04, 2026, 07:07 PM UTC
The degradation has been mitigated. We are monitoring to ensure stability.
- investigating Jun 04, 2026, 07:41 PM UTC
The mitigation for Copilot Code Review is now fully deployed, and new reviews are working as expected. We are continuing to monitor for full resolution. Customers may need to re-request Copilot Code Review. Copilot Code Review Actions runs running for longer than 20 minutes may be safely...
- investigating Jun 04, 2026, 07:59 PM UTC
This issue is now fully resolved and Copilot Code Review is working as expected.
- resolved Jun 04, 2026, 07:59 PM UTC
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.