Disruption with Copilot Code Review

Timeline

1. Sep 4, 2026, 10:26 PM 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. Sep 4, 2026, 10:25 PM UTC

   The degradation has been mitigated. We are monitoring to ensure stability.

3. Sep 4, 2026, 9:54 PM UTC

   We are applying the mitigation and expect recovery within approximately 30 minutes.

4. Sep 4, 2026, 8:57 PM 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. Sep 4, 2026, 8:39 PM UTC

   We are investigating reports of impacted performance for some GitHub services.