Cloudflare Edge Errors
Proxy — 15 error codes
Reference list of 15 Cloudflare edge errors with meanings, common causes, and related context.
Showing 15 of 15 error codes
Web Server Returned an Unknown Error — the origin sent unexpected responses to the proxy
Web Server Is Down — Cloudflare cannot establish a TCP connection to the origin server
Connection Timed Out — the origin server took too long to complete the TCP handshake
Origin Is Unreachable — Cloudflare cannot locate a network path to the origin IP
A Timeout Occurred — the origin server connected but failed to reply in time
SSL Handshake Failed — Cloudflare could not negotiate a secure connection to the origin
Invalid SSL Certificate — the origin server presented an untrusted or invalid certificate
Origin DNS Error
Access Denied
DNS Resolution Error — Cloudflare cannot resolve the hostname provided in the request
Restricted — Cloudflare blocked the request because the URL resolves to a disallowed IP address
Origin DNS Error — Cloudflare cannot resolve the origin server hostname in the zone configuration
DNS Points to Prohibited IP
Rate Limited
Railgun Error — Cloudflare could not complete the Railgun connection to the origin