---
description: Troubleshoot HTTP 407 error responses.
title: Error 407
image: https://developers.cloudflare.com/og-docs.png
---

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# Error 407

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/support/troubleshooting/http-status-codes/4xx-client-error/error-407/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

## 407 Authentication Required

The `407 Proxy Authentication Required` status code indicates that the client did not provide the necessary authentication credentials to access the requested resource through a proxy server. For more details, refer to [RFC 7235 ↗](https://tools.ietf.org/html/rfc7235).

### Common use cases

This error typically occurs in environments where a proxy server is used as an intermediary between the client and the target server. To resolve this, the client must include the appropriate `Proxy-Authorization` header in the request with valid credentials.

### Cloudflare-specific information

Cloudflare does not generate `407` errors but proxies them from the origin server or an upstream proxy. If a `407` error occurs on a Cloudflare-powered site, review the origin server's proxy configuration to ensure authentication requirements are properly set, and verify that the client is providing the required credentials.

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