407 Proxy Authentication Required

The HTTP 407 Proxy Authentication Required client error response status code indicates that the request did not succeed because it lacks valid authentication credentials for the {{Glossary("proxy server")}} that sits between the client and the server with access to the requested resource.

This response is sent with a {{HTTPHeader("Proxy-Authenticate")}} header that contains information on how to correctly authenticate requests. The client may repeat the request with a new or replaced {{HTTPHeader("Proxy-Authorization")}} header field.

Status

407 Proxy Authentication Required

Examples

Proxy auth

A GET request is made to example.com/admin:

GET /admin HTTP/1.1
Host: example.com

Along the way, an intermediary lets the client know that clients must be authenticated and provides information about the authentication scheme:

HTTP/1.1 407 Proxy Authentication Required
Date: Wed, 21 Oct 2015 07:28:00 GMT
Proxy-Authenticate: Basic realm="Access to internal site"

Specifications

{{Specifications}}

See also

• HTTP response status codes
• HTTP authentication
• {{HTTPHeader("WWW-Authenticate")}}
• {{HTTPHeader("Authorization")}}
• {{HTTPHeader("Proxy-Authorization")}}
• {{HTTPHeader("Proxy-Authenticate")}}
• {{HTTPStatus("401")}}, {{HTTPStatus("403")}}