# Vercel: Major incident: Vercel Auth login failures for pages with Deployment Protection enabled

**Summary:** Vercel Auth logins failed for pages with Deployment Protection enabled in a major-impact incident affecting Routing Middleware. It started at 2026-10-06 16:10 UTC and was resolved at 2026-10-06 16:26 UTC, lasting 15 min; Vercel reported implementing a fix. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-10-06 16:10 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/l76txmwrzdcp](https://stspg.io/l76txmwrzdcp)
- [Company: Vercel](https://rewindex.com/company/vercel.md)
- Versions: before (none: first archived) → after incident\_version:215/1dp8c0nfchtg@20b8c77375ec
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Vercel Auth login failures for pages with Deployment Protection enabled
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-06 16:10 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-06 16:26 UTC
```

**6. Added: Affected components**

```diff
+ Routing Middleware
```

**7. Added: Update** (investigating) · 2026-10-06 16:10 UTC

```diff
+ We are investigating an issue causing Vercel Auth login failures for pages with Deployment Protection enabled. We will provide an update as more information becomes available.
```

**8. Added: Update** (identified) · 2026-10-06 16:14 UTC

```diff
+ The issue has been identified and a fix is being implemented.
```

**9. Added: Update** (monitoring) · 2026-10-06 16:17 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**10. Added: Update** (resolved) · 2026-10-06 16:26 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-06 16:10 UTC | Major incident: Vercel Auth login failures for pages with Deployment Protection enabled (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/ic1e9cb011d3327 · Markdown: https://rewindex.com/change/ic1e9cb011d3327.md · JSON: https://rewindex.com/api/v1/changes/ic1e9cb011d3327 · Generated 2026-10-18T02:29:36.029Z