# E2B: Template builds failing

- Impact (vendor’s label): critical
- Status: resolved
- Started: 2026-10-21 14:03 UTC · Resolved: 2026-10-21 14:06 UTC · Duration: 3 min
- Updates: 2 · Affected components: Template Builds, Template Builds, Template Builds, Template Builds
- [Vendor status page: https://status.e2b.dev/incidents/01M5FEGC218X1EEYP1V962EMQW](https://status.e2b.dev/incidents/01M5FEGC218X1EEYP1V962EMQW)
- [Company: E2B](https://rewindex.com/company/e2b.md)

## Timeline of updates

- **identified** 2026-10-21 14:03 UTC: We have identified an issue causing new template builds to fail.
- **resolved** 2026-10-21 14:06 UTC: Between 14:03 and 14:06 UTC on October 21, new template builds failed to start with the error “500: invalid build configuration, contact support”. This was caused by a configuration issue on our side, which has been fixed. Template builds are working normally again. Running sandboxes were not affected. If a build failed during this window, please retry it. We apologize for any disruption.

## Rewindex changes for this incident

- 2026-10-21 14:03 UTC: [Critical incident: Template builds failing](https://rewindex.com/change/i81c543b94a423f.md)


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Canonical: https://rewindex.com/company/e2b/incidents/01M5FEGC218X1EEYP1V962EMQW · Markdown: https://rewindex.com/company/e2b/incidents/01M5FEGC218X1EEYP1V962EMQW.md · JSON: https://rewindex.com/api/v1/companies/e2b/incidents/01M5FEGC218X1EEYP1V962EMQW · Generated 2026-10-22T00:33:04.282Z