# E2B: Critical incident: Template builds failing

**Summary:** _summary pending_
- Kind: Major incident · Label: critical (vendor)
- Changed: 2026-10-21 14:03 UTC · Detected: 2026-10-21 14:43 UTC
- [Source: https://status.e2b.dev/incidents/01M5FEGC218X1EEYP1V962EMQW](https://status.e2b.dev/incidents/01M5FEGC218X1EEYP1V962EMQW)
- [Company: E2B](https://rewindex.com/company/e2b.md)
- Versions: before (none: first archived) → after incident\_version:677/01M5FEGC218X1EEYP1V962EMQW@54471a585413
- Change 1 of 1 for this incident

Incident page (full timeline): [Template builds failing](https://rewindex.com/company/e2b/incidents/01M5FEGC218X1EEYP1V962EMQW.md)
## What changed

**1. Added: Title**

```diff
+ Template builds failing
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-21 14:03 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-21 14:06 UTC
```

**6. Added: Update** (identified) · 2026-10-21 14:03 UTC

```diff
+ We have identified an issue causing new template builds to fail.
```

**7. Added: Update** (resolved) · 2026-10-21 14:06 UTC

```diff
+ 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.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-21 14:03 UTC | Critical incident: Template builds failing (this change) | critical |

All E2B changes: [timeline](https://rewindex.com/company/e2b/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i81c543b94a423f · Markdown: https://rewindex.com/change/i81c543b94a423f.md · JSON: https://rewindex.com/api/v1/changes/i81c543b94a423f · Generated 2026-10-22T00:37:29.629Z