# Mintlify: Major incident: Unable to access preview deployments

> Major incident: Unable to access preview deployments. Detected 2026-11-04 by Rewindex: what changed on Mintlify’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/ia90b6247a7e52a
Last updated: 2026-11-04T21:13:11Z

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2026-11-04 21:01 UTC · Detected: 2026-11-04 21:13 UTC
- [Source: https://status.mintlify.com/incidents/01M6M5WKJN74NJCW4559PNDHQC](https://status.mintlify.com/incidents/01M6M5WKJN74NJCW4559PNDHQC)
- [Company: Mintlify](https://rewindex.com/company/mintlify.md)
- Versions: before (none: first archived) → after incident\_version:748/01M6M5WKJN74NJCW4559PNDHQC@619b0d07cb7e
- Change 1 of 3 for this incident

Incident page (full timeline): [Unable to access preview deployments](https://rewindex.com/company/mintlify/incidents/01M6M5WKJN74NJCW4559PNDHQC.md)
## What changed

**1. Added: Title**

```diff
+ Unable to access preview deployments
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ investigating
```

**4. Added: Start time**

```diff
+ 2026-11-04 21:01 UTC
```

**5. Added: Update** (investigating) · 2026-11-04 21:01 UTC

```diff
+ We’re investigating an authentication issue that is preventing some users from accessing preview deployments. Previews are still building normally, and production documentation sites are not affected.
```

**6. Added: Update** (investigating) · 2026-11-04 21:09 UTC

```diff
+ We've identified the cause of the error affecting preview deployments and sites protected by Mintlify authentication. A fix is being deployed now. Users who are already logged in and sites using other authentication methods are not affected.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-04 21:01 UTC | Major incident: Unable to access preview deployments (this change) | major |
| 2026-11-04 21:23 UTC | [Incident updated: Unable to access preview deployments](https://rewindex.com/change/rfc0b29788e82f5.md) |  |
| 2026-11-04 21:33 UTC | [Incident updated: Unable to access preview deployments](https://rewindex.com/change/r406b39462cc843.md) |  |

Next: [change](https://rewindex.com/change/rfc0b29788e82f5.md) · All Mintlify changes: [timeline](https://rewindex.com/company/mintlify/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._

## Cite this

Major incident: Unable to access preview deployments on Mintlify’s status page, changed 2026-11-04 21:01 UTC (change 1 of 3).

- Canonical URL: https://rewindex.com/change/ia90b6247a7e52a
- Citation: Mintlify, “Major incident: Unable to access preview deployments” (2026-11-04 21:01 UTC). Archived by Rewindex: https://rewindex.com/change/ia90b6247a7e52a (CC BY 4.0).
- Markdown link: `[Mintlify: Major incident: Unable to access preview deployments (2026-11-04)](https://rewindex.com/change/ia90b6247a7e52a)`


---
Canonical: https://rewindex.com/change/ia90b6247a7e52a · Markdown: https://rewindex.com/change/ia90b6247a7e52a.md · JSON: https://rewindex.com/api/v1/changes/ia90b6247a7e52a · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T08:10:38.549Z