Minor impactResolvedDevOps

CircleCI incident: Mac jobs failing to start

CircleCI reported this minor-impact incident on its official status page on Jun 1, 2026, 01:04 UTC. It was resolved after 2h 22m.

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Jun 1, 2026, 01:04 UTC
started
Jun 1, 2026, 03:26 UTC
resolved
2h 22m
duration
Minor
impact

Affected components

  • macOS Jobs
  1. resolvedJun 1, 2026, 03:26 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.

  2. monitoringJun 1, 2026, 02:05 UTC

    Mac jobs are running successfully, and we are continuing to monitor the performance of our Mac fleet. Thank you for your patience.

  3. monitoringJun 1, 2026, 01:36 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.

  4. investigatingJun 1, 2026, 01:05 UTC

    We are continuing to investigate this issue.

  5. investigatingJun 1, 2026, 01:04 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.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in CircleCI's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

How often does CircleCI have incidents?

CircleCI reported 22 incidents in the last 90 days, 1 of them major or critical. A typical incident lasted 1h 38m. See CircleCI's uptime and incident history

CircleCI incident on Jun 1, 2026: Mac jobs failing to start · APIStatus.watch