504 Gateway Timeout

The HyperText Transfer Protocol (HTTP) 504 Gateway Timeout server error response code indicates that the server, while acting as a gateway or proxy, did not get a response in time from the upstream server that it needed in order to complete the request. 

Note: A Gateway might refer to different things in networking and a 504 error is usually not something you can fix, but requires a fix by the web server or the proxies you are trying to get access through.

Status

504 Gateway Timeout

Specifications

Specification Title
RFC 7231, section 6.6.5: 504 Gateway Timeout Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Browser compatibility

BCD tables only load in the browser

The information shown below has been pulled from MDN's GitHub (https://github.com/mdn/browser-compat-data).

See also