HTTP 407 Proxy Authentication Required
Client Error4xx Response — Proxy Authentication Required
What Does HTTP 407 Mean?
HTTP 407 Proxy Authentication Required indicates that the client must authenticate with a proxy server before the request can be forwarded. It is similar to 401 but for proxy authentication instead of origin server authentication.
The response includes a Proxy-Authenticate header specifying the authentication scheme required by the proxy. The client must resend the request with a Proxy-Authorization header containing the proxy credentials.
HTTP 407 is typically encountered in corporate environments where all internet traffic passes through an authenticated proxy server. Users must configure their browser or system with proxy credentials to access external websites.
Common Causes of 407 Proxy Authentication Required
A proxy server requires authentication before forwarding the request. Common in corporate environments with authenticated proxy servers, VPN gateways, and content filtering systems.
The proxy includes a Proxy-Authenticate header specifying the required authentication scheme.
How to Fix 407 Proxy Authentication Required
Configure proxy credentials in your browser or system settings. Contact your network administrator for the correct proxy authentication details. For programmatic access, include Proxy-Authorization headers in your requests.
In corporate environments, your IT department can provide the proxy configuration details.
Related Status Codes
Frequently Asked Questions
What does HTTP 407 mean?
HTTP 407 Proxy Authentication Required is a client error response. HTTP 407 Proxy Authentication Required indicates that the client must authenticate with a proxy server before the request can be forwarded. It is similar to 401 but for proxy authentication instead of
Is HTTP 407 an error?
Yes, HTTP 407 is a client error. Client Error responses (cli) indicate the request contains an error.
How do I fix HTTP 407?
Configure proxy credentials in your browser or system settings. Contact your network administrator for the correct proxy authentication details. For programmatic access, include Proxy-Authorization headers in your requests.
What causes HTTP 407 Proxy Authentication Required?
A proxy server requires authentication before forwarding the request. Common in corporate environments with authenticated proxy servers, VPN gateways, and content filtering systems.
Is HTTP 407 permanent or temporary?
HTTP 407 is situational — it depends on the underlying cause. Fix the root cause to resolve it.
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