# CircleCI: Build failures Xcode 26.4.0

> CircleCI status incident “Build failures Xcode 26.4.0” on 2026-04-24: impact minor (vendor’s label), 1.2 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/circleci/incidents/90354ss2tb8t
Last updated: 2026-04-24T18:36:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-04-24 17:25 UTC · Resolved: 2026-04-24 18:36 UTC · Duration: 1.2 h
- Updates: 1
- [Vendor status page: https://status.circleci.com/incidents/90354ss2tb8t](https://status.circleci.com/incidents/90354ss2tb8t)
- [Company: CircleCI](https://rewindex.com/company/circleci.md)

## Timeline of updates

- **resolved** 2026-04-24 18:36 UTC: Customers running macOS jobs on m4pro.medium and m4pro.large with the xcode:26.4.0 image experienced job rejections with the error: "Job was rejected because resource class , image xcode:26.4.0 is not a valid resource class". The issue has been resolved and affected jobs should now run normally. Customers whose jobs failed may rerun affected jobs. We thank you for your patience while our team worked on implementing a fix.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by CircleCI, started 2026-04-24 17:25 UTC, resolved after 1.2 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/circleci/incidents/90354ss2tb8t
- Citation: CircleCI, “Build failures Xcode 26.4.0” (2026-04-24 17:25 UTC). Archived by Rewindex: https://rewindex.com/company/circleci/incidents/90354ss2tb8t (CC BY 4.0).
- Markdown link: `[CircleCI: Build failures Xcode 26.4.0 (2026-04-24)](https://rewindex.com/company/circleci/incidents/90354ss2tb8t)`


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Canonical: https://rewindex.com/company/circleci/incidents/90354ss2tb8t · Markdown: https://rewindex.com/company/circleci/incidents/90354ss2tb8t.md · JSON: https://rewindex.com/api/v1/companies/circleci/incidents/90354ss2tb8t · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T14:42:31.891Z