# Vercel: Major incident: Increased deployment failures

**Summary:** Vercel reported a major incident causing some deployments using IAD1 Function regions or Routing Middleware to fail. It started at 2026-09-01 19:59 UTC and lasted 59 min, resolving at 2026-09-01 20:58 UTC after a fix was deployed and Builds recovered. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-09-01 19:59 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/01mntryqfgdj](https://stspg.io/01mntryqfgdj)
- [Company: Vercel](https://rewindex.com/company/vercel.md)
- Versions: before (none: first archived) → after incident\_version:215/1z2qkcjgfx3y@5874738f4025
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Increased deployment failures
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-09-01 19:59 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-09-01 20:58 UTC
```

**6. Added: Affected components**

```diff
+ Build & Deploy - Builds, Builds
```

**7. Added: Update** (investigating) · 2026-09-01 19:59 UTC

```diff
+ We've identified an issue where some deployments that use IAD1 Function regions or Routing Middleware are failing. We are investigating and will provide more information as it becomes available.
```

**8. Added: Update** (investigating) · 2026-09-01 20:27 UTC

```diff
+ We are actively working to fix an issue causing some deployments that use IAD1 Function regions or Routing Middleware to fail. We will provide additional updates as they become available.
```

**9. Added: Update** (identified) · 2026-09-01 20:37 UTC

```diff
+ We have identified the issue and are working on a fix. We are seeing recovery as the fix is deployed. We will provide additional updates as they become available.
```

**10. Added: Update** (monitoring) · 2026-09-01 20:45 UTC

```diff
+ We are seeing recovery in Builds and are continuing to monitor.
```

**11. Added: Update** (monitoring) · 2026-09-01 20:49 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**12. Added: Update** (resolved) · 2026-09-01 20:58 UTC

```diff
+ This incident has been resolved. Builds have recovered.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-09-01 19:59 UTC | Major incident: Increased deployment failures (this change) | outage |

All Vercel changes: [timeline](https://rewindex.com/company/vercel/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/i94c01961fb2167 · Markdown: https://rewindex.com/change/i94c01961fb2167.md · JSON: https://rewindex.com/api/v1/changes/i94c01961fb2167 · Generated 2026-10-18T03:34:01.454Z