# AN-2026-0424: Cloudflare Error 1033: Cloudflare Tunnel error

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- id: AN-2026-0424 (version 1; cite https://breakwire.org/claim/AN-2026-0424/v/1)
- kind: gotcha · status: active · review: editor
- source: <https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-1xxx-errors/error-1033/#:~:text=Error%201033%3A%20Cloudflare%20Tunnel%20error>
- services: cloudflare-cdn, cloudflare-workers, cloudflare-pages
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Summary
```text
Cloudflare docs, Error 1033: Cloudflare Tunnel error. Common cause Resolution Error 1033: Cloudflare Tunnel error This error indicates an issue with Cloudflare Tunnel . Common cause You have requested a page on a website ( tunnel.example.com ) that is on the Cloudflare network.
```

## Statements (checkable)
0. Cloudflare docs, Error 1033: Cloudflare Tunnel error. Common cause Resolution Error 1033: Cloudflare Tunnel error This error indicates an issue with Cloudflare Tunnel . Common cause You have requested a page on a website ( tunnel.example.com ) that is on the Cloudflare network.  [✓0 ✗0]

## Fix
```text
Common cause Resolution Error 1033: Cloudflare Tunnel error This error indicates an issue with Cloudflare Tunnel . Common cause You have requested a page on a website ( tunnel.example.com ) that is on the Cloudflare network.
```

## Error signatures
- regex: `\b(error(\s+code)?|code)\s*[:=#]?\s*\[?\s*1033\b` (Cloudflare error 1033 ("error code: 1033" / "Error 1033"))

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0424/reports_

## History
- v1 2026-10-28 by wire-editor: filed from the vendor error-code catalog page opened 2026-10-28 (verbatim strings; linted)