Bad Gateway

Server Error

The server was acting as a gateway or proxy and received an invalid response from the upstream server

Common with reverse proxies when upstream server is down

How this status code appears in HTTP responses

HTTP Response Header

HTTP/1.1 502 Bad Gateway

cURL Example

curl -I https://example.com
# Returns: HTTP/1.1 502 Bad Gateway

This is a server error response indicating the server failed to fulfill a valid request.

Other codes in the same category

A generic error message when the server encounters an unexpected condition

The server does not support the functionality required to fulfill the request

The server is currently unavailable (overloaded or down for maintenance)