Circle CI incident
Delays starting macOS jobs that use Xcode 26.6.0
Circle CI experienced a minor incident on October 14, 2026 affecting macOS Jobs, lasting 1h 13m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 14, 2026, 02:47 PM UTC
Since approximately 14:00 UTC, customers running macOS jobs that use Xcode 26.6.0 on the M4 Pro large resource class are experiencing delays starting jobs. Wait times have reached 30 minutes or more. Thank you for your patience while our engineers investigate. We will provide another update by 15:30 UTC.
- identified Oct 14, 2026, 03:17 PM UTC
Delays starting macOS jobs that use Xcode 26.6.0 have recovered. Since approximately 15:11 UTC, macOS jobs that use Xcode 26.4 are experiencing delays starting, with wait times of about 30 minutes. Thank you for your patience while our engineers work to resolve this. We will provide another update by 15:45 UTC.
- resolved Oct 14, 2026, 04:01 PM UTC
Between approximately 14:00 UTC and 15:51 UTC on October 14, customers running macOS jobs that use Xcode 26.6.0 or Xcode 26.4 experienced delays starting jobs. From approximately 14:00 UTC, jobs that use Xcode 26.6.0 on the M4 Pro large resource class waited 30 minutes or more to start, and these delays recovered at approximately 15:12 UTC. From approximately 15:11 UTC, jobs that use Xcode 26.4 waited about 30 minutes to start. The issue has been resolved and all affected functionality has returned to normal. We thank you for your patience while our team worked on implementing a fix.