Error 407

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 ↗.

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.