Disruption with Copilot Code Review

Timeline

1. 09 Sep · 17:07 UTC 🟠 Resolved atom

   Sep 4, 22:26 UTC
   Resolved - 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.
   
   Sep 4, 22:25 UTC
   Monitoring - The degradation has been mitigated. We are monitoring to ensure stability.
   
   Sep 4, 21:54 UTC
   Update - We are applying the mitigation and expect recovery within approximately 30 minutes.
   
   Sep 4, 20:57 UTC
   Update - Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.
   
   Sep 4, 20:39 UTC
   Investigating - We are investigating reports of impacted performance for some GitHub services.

2. 04 Sep · 22:26 UTC 🟠 Resolved atom

   Sep 4, 22:26 UTC
   Resolved - 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.
   
   Sep 4, 22:25 UTC
   Monitoring - The degradation has been mitigated. We are monitoring to ensure stability.
   
   Sep 4, 21:54 UTC
   Update - We are applying the mitigation and expect recovery within approximately 30 minutes.
   
   Sep 4, 20:57 UTC
   Update - Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.
   
   Sep 4, 20:39 UTC
   Investigating - We are investigating reports of impacted performance for some GitHub services.

3. 04 Sep · 21:54 UTC 🟠 Identified atom

   Sep 4, 21:54 UTC
   Update - We are applying the mitigation and expect recovery within approximately 30 minutes.
   
   Sep 4, 20:57 UTC
   Update - Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.
   
   Sep 4, 20:39 UTC
   Investigating - We are investigating reports of impacted performance for some GitHub services.

4. 04 Sep · 20:57 UTC 🟠 Identified atom

   Sep 4, 20:57 UTC
   Update - Some users may be experiencing failures when using Copilot code review. We have identified the root cause and are working on a mitigation.
   
   Sep 4, 20:39 UTC
   Investigating - We are investigating reports of impacted performance for some GitHub services.

5. 04 Sep · 20:39 UTC 🟠 Investigating atom

   Sep 4, 20:39 UTC
   Investigating - We are investigating reports of impacted performance for some GitHub services.