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HTTP_STATUS_PROXY_AUTH_REQ
The proxy should identify an acceptable authentication scheme in Proxy-Authenticate. The client responds with Proxy-Authorization on a new or retried request to that proxy.
Check proxy address, credentials, and TLS interception policy. A proxy challenge can occur before a TLS tunnel is created for an HTTPS destination, so sending ordinary origin-server Authorization credentials will not satisfy a 407 challenge.
The response is generated on the proxy authentication path and normally includes Proxy-Authenticate challenges. Credentials intended for the origin Authorization header are not interchangeable with proxy credentials. Configure the client for the selected proxy and authentication scheme, and avoid forwarding Proxy-Authorization beyond the proxy that requested it.
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