407 Proxy Authentication Required

This error response indicates that the request failed due to invalid authentication credentials. This error specifically applies to a proxy server between the browser and the server.

Usually the error is sent information on how to correctly authenticate the connection. The user should confirm the response and authentication details to resolve.

If this error is unexpected or if it persists then contacting either the proxy support or server support may be needed to resolve.

The HTTP 407 Proxy Authentication Required client error status response code indicates that the request has not been applied because it lacks valid authentication credentials for a proxy server that is between the browser and the server that can access the requested resource.

This status is sent with a Proxy-Authenticate header that contains information on how to authorize correctly.

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