Disruption with Copilot Code Review
Sep 4, 20:39 UTCSep 4, 22:26 UTC
Duration
1h 48m
Impact
Major
Root cause
Not disclosed
GitHub, 90 days
69 incidents
Affected
Not listed by the vendor.
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.
Timeline
- 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.
- Monitoring · Sep 4, 22:25 UTC
The degradation has been mitigated. We are monitoring to ensure stability.
- Investigating · Sep 4, 21:54 UTC
We are applying the mitigation and expect recovery within approximately 30 minutes.
- 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.
- Investigating · Sep 4, 20:39 UTC
We are investigating reports of impacted performance for some GitHub services.
More from GitHub
Full history| Started | Incident | Impact | Duration |
|---|---|---|---|
| Sep 2416:51 UTC | Disruption with billing information updates | minor | 3h 50m |
| Sep 2310:11 UTC | Incident across several services | minor | 18h 44m |
| Sep 2022:13 UTC | Incident with Pull Requests | minor | 1h 9m |
| Sep 1720:59 UTC | Elevated rate of errors for OpenAI models provided by Copilot | minor | 50m |
| Sep 1607:20 UTC | Degradation with Gemini 3.8 Flash | major | 10h 28m |
| Sep 1519:11 UTC | Disruption with some GitHub services | minor | 49m |
Sources: vendors' own status pages, published postmortems and SEC 8-K Item 1.05 filings, read daily. Times as reported. Logos via logo.dev; trademarks belong to their owners.