Circle CI experienced a minor incident on June 1, 2026 affecting macOS Jobs, lasting 2h 21m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 01, 2026, 01:04 AM UTC
Mac jobs are continuing to experience failures. Our infrastructure provider is continuing to report that they are experiencing a DDoS attack causing high network latency and packet loss for our Mac fleet. We are working to bring up additional capacity to restore service.
- investigating Jun 01, 2026, 01:05 AM UTC
We are continuing to investigate this issue.
- monitoring Jun 01, 2026, 01:36 AM UTC
We are seeing Mac jobs starting successfully and improved network connectivity to the Mac fleet, however our infrastructure provider is continuing to experience a DDoS attack. We will continue to monitor the recovery while bringing additional capacity to our platform.
- monitoring Jun 01, 2026, 02:05 AM UTC
Mac jobs are running successfully, and we are continuing to monitor the performance of our Mac fleet. Thank you for your patience.
- resolved Jun 01, 2026, 03:26 AM UTC
All Mac jobs are running successfully. Our infrastructure provider has confirmed that the DDoS attack has been mitigated and that services have been restored. Thank you for your patience during this incident.