Disruption with Copilot Code Review

Final update

On September 4, 2026, between 20:04 and 22:26 UTC, GitHub Copilot code review experienced an increased failure rate. Affected pull request reviews failed to complete or post review comments. The incident was caused by a change to the service’s authentication permissions that prevented it from submitting affected reviews to the GitHub API. We reverted the change and restored normal operation by 22:26 UTC. We apologize for the disruption.

1. Resolved · Sep 4, 22:26 UTC
   On September 4, 2026, between 20:04 and 22:26 UTC, GitHub Copilot code review experienced an increased failure rate. Affected pull request reviews failed to complete or post review comments. The incident was caused by a change to the service’s authentication permissions that prevented it from submitting affected reviews to the GitHub API. We reverted the change and restored normal operation by 22:26 UTC. We apologize for the disruption.
2. Monitoring · Sep 4, 22:25 UTC
   The degradation has been mitigated. We are monitoring to ensure stability.
3. Investigating · Sep 4, 21:54 UTC
   We are applying the mitigation and expect recovery within approximately 30 minutes.
4. Investigating · Sep 4, 20:57 UTC
   Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.
5. Investigating · Sep 4, 20:39 UTC
   We are investigating reports of impacted performance for some GitHub services.