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Outage in CircleCI

Mac jobs failing to start

Resolved Minor
June 01, 2026 - Started 9 days ago - Lasted about 2 hours
Official incident page

Incident Report

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.
Components affected
CircleCI macOS Jobs

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Latest Updates ( sorted recent to last )
RESOLVED 9 days ago - at 06/01/2026 03:26AM

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.

MONITORING 9 days ago - at 06/01/2026 02:05AM

Mac jobs are running successfully, and we are continuing to monitor the performance of our Mac fleet.

Thank you for your patience.

MONITORING 9 days ago - at 06/01/2026 01:36AM

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.

INVESTIGATING 9 days ago - at 06/01/2026 01:05AM

We are continuing to investigate this issue.

INVESTIGATING 9 days ago - at 06/01/2026 01:04AM

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.

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