# GitHub: Disruption with some GitHub services

> GitHub status incident “Disruption with some GitHub services” on 2026-05-26: impact minor (vendor’s label), 51 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/github/incidents/xflkh26pm7vv
Last updated: 2026-05-26T16:35:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-05-26 15:44 UTC · Resolved: 2026-05-26 16:35 UTC · Duration: 51 min
- Updates: 1
- [Vendor status page: https://www.githubstatus.com/incidents/xflkh26pm7vv](https://www.githubstatus.com/incidents/xflkh26pm7vv)
- [Company: GitHub](https://rewindex.com/company/github.md)

## Timeline of updates

- **resolved** 2026-05-26 16:35 UTC: On May 26, 2026, between 15:10 UTC and 16:35 UTC the Copilot service was degraded and many models were no longer available for use. On average, the error rate was ~5% and peaked at 11% of requests to the service. This was due to a change that introduced a configuration mismatch in HMAC signing credentials which caused the list of available models to be truncated. This was mitigated by rolling back the change. This rollback was complete by 15:34 UTC though users continued to see impact until cache TTLs expired. We are working to improve our monitoring and error handling to reduce time to detection and better experience for issues like this in the future.

_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 GitHub, started 2026-05-26 15:44 UTC, resolved after 51 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/github/incidents/xflkh26pm7vv
- Citation: GitHub, “Disruption with some GitHub services” (2026-05-26 15:44 UTC). Archived by Rewindex: https://rewindex.com/company/github/incidents/xflkh26pm7vv (CC BY 4.0).
- Markdown link: `[GitHub: Disruption with some GitHub services (2026-05-26)](https://rewindex.com/company/github/incidents/xflkh26pm7vv)`


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Canonical: https://rewindex.com/company/github/incidents/xflkh26pm7vv · Markdown: https://rewindex.com/company/github/incidents/xflkh26pm7vv.md · JSON: https://rewindex.com/api/v1/companies/github/incidents/xflkh26pm7vv · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T21:43:45.949Z