Error Code Portal
CloudflareCloudflare HTTP errorsError code

504

Error 502 bad gateway or error 504 gateway timeout

Alternative forms: Error 504

What does this code mean?

Code 504 · An issue reported by Cloudflare HTTP errors.

Official explanation · Original text

An HTTP 502 or 504 error indicates that Cloudflare is unable to establish contact with your origin web server. There are two possible causes:

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Error 502 bad gateway or error 504 gateway timeout ↗

Creator: Cloudflare, Inc. and contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Selected introductory official description; Markdown stripped; original Korean product context added. Direct official error page retains the complete cause and resolution instructions.

Source details · Original licenses and notices