Disruption with Copilot Code Review

Summary

Disruption with Copilot Code Review

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.<br /><br />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.<br /><br />We apologize for the disruption.

• Started

  Sep 4, 2026 · 8:39 PM

• Resolved

  Sep 4, 2026 · 10:26 PM

• Duration

  1h 47m

• Severity

  Major

• ◐

  Investigating

  Sep 4 · 8:39 PM GitHub

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

• ◐

  Investigating

  Sep 4 · 8:57 PM GitHub

  Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.

• ◐

  Investigating

  Sep 4 · 9:54 PM GitHub

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

• ◉

  Monitoring

  Sep 4 · 10:25 PM GitHub

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

• ✓

  Resolved

  Sep 4 · 10:26 PM GitHub

  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.<br /><br />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.<br /><br />We apologize for the disruption.