Some Copilot Cloud Agent jobs not starting

Updates timeline

1. Investigating Aug 5, 11:38 AM UTC

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

2. Monitoring Aug 5, 12:01 PM UTC

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

3. Monitoring Aug 5, 12:10 PM UTC

   Copilot cloud agent jobs have recovered and the backlog of delayed jobs is being processed.

4. Resolved Aug 5, 01:00 PM UTC

   On August 5, 2026, between 11:02 and 11:54 UTC, the GitHub Copilot cloud agent service was degraded and new cloud agent jobs were delayed from starting. During this period 100% of newly submitted agent jobs were affected. The incident was limited to delay of cloud agent jobs. No jobs were lost and the queued backlog was processed by 13:00 UTC. This was due to an internal rate limit used to protect service availability that was enabled more broadly than intended delaying more traffic than expected. <br /> <br />The service recovered when the rate limit window expired. We then tuned the control so it no longer affected unrelated coding agent traffic. <br /> <br />We are working to improve the control's scoping and our monitoring and alerting to reduce our time to detection and mitigation of similar issues in the future.