What does 502 bad gateway mean?

502 Bad Gateway error is an HTTP status code. This code is one of the HTTP status codes and indicates that a server on the Internet received an invalid response from another server, which refers to a bad gateway. , Invalid Gateway; indicates a network error on the Internet. Displayed in the page feedback given in the WEB browser.

502 Bad gateway error is an HTTP status code that indicates a Server received an invalid response from another server.

502 Bad Gateway error is completely independent of your specific settings, which means you can see the error on any browser, any operating system, and any device.

502 Bad Gateway error appears inside an Internet browser window, just like a web page.

How to Occur 502 Bad Gateway Error

Each website can customize the 502 Bad Gateway. Although this is fairly rare, different web servers describe this error in different ways.

Here are some common tips you may see:

//502错误的网关
502 Bad Gateway
//502服务暂时超载
502 Service Temporarily Overloaded
//错误502
Error 502
//临时错误（502）
Temporary Error (502)
//502代理错误
502 Proxy Error
//502服务器错误：服务器遇到临时错误，无法完成您的请求
502 Server Error: The server encountered a temporary error and could not complete your request
//HTTP 502
HTTP 502
//那是一个错误
502. That's an error
//错误网关：代理服务器收到来自上游服务器的无效响应
Bad Gateway: The proxy server received an invalid response from an upstream server
//HTTP错误502 - 错误的网关
HTTP Error 502 - Bad Gateway

Receiving a Bad Gateway error in Windows Update generates the 0x80244021 error code or message WU_E_PT_HTTP_STATUS_BAD_GATEWAY.

When Google services (such as Google Search or Gmail) encounter a 502 Bad Gateway, they will usually display a server error on the screen, and sometimes just a 502.

502 Causes of Bad Gateway Error

502 Bad Gateway errors are usually caused by problems between online servers that are beyond your control. However, sometimes it could be a problem with your browser, a problem with your home network equipment, or some other controlling factor.

Note

: Microsoft IIS web servers often provide more information about the cause of a specific 502 Bad Gateway error by adding an extra number after the 502, as in HTTP Error 502.3 - The web server in An invalid response was received while acting as a gateway or proxy, which means Bad Gateway: Forwarder Connection Error (ARR).

An HTTP Error 502.1 - Bad Gateway error refers to the CGI application timeout problem, which is easier to solve than the 504 gateway timeout problem.

Recommended reading:

How to solve 502 bad gateway

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