HTTP status codes

The following are standard HTTP status codes:

Http status code with certificate: [status code]—

The “with certificate” indicates the HTTPS branch.

Http status code: [status code]—

Indicates the HTTP branch that does not handle certificates.

Status Codes

403, “forbidden” —Usually indicates a certificate issue.

407, “Proxy authentication required”—Indicates the need to enable the use of a proxy.

500, server error—Look in the diagnostic log or Windows logs, or enable logging in IIS.