Outage in Circle CI
Delays starting macOS jobs that use Xcode 26.6.0
Resolved MinorIncident Report
Summary AI Generated
Between 14:00 and 15:51 UTC on October 14, CircleCI macOS jobs experienced significant start delays of 30 minutes or more, initially affecting Xcode 26.6.0 on M4 Pro large resource class instances, then shifting to Xcode 26.4 jobs from around 15:11 UTC. The issue cascaded across two Xcode versions before engineers implemented a fix, with full resolution confirmed at 15:51 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.
Components affected
Circle CI macOS JobsTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
5 days ago - at 10/14/2026 04:01PM
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.
IDENTIFIED
5 days ago - at 10/14/2026 03:17PM
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.
INVESTIGATING
5 days ago - at 10/14/2026 02:47PM
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.
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