502 Web Server Error
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The Server Responded With A Status Of 502 (bad Gateway)
502 Bad Gateway Error (What It Is and How to Fix It) How to Fix request failed bad gateway (502) a 502 Bad Gateway Error 502 Bad Gateway Error. © THORDOG By Tim Fisher PC Support Expert Share Pin Tweet Submit Stumble server error 502 web server received an invalid response Post Share By Tim Fisher Updated August 31, 2016. The 502 Bad Gateway error is an HTTP status code that means that one server received an invalid response from another server.The Bad Gateway error can be customized
502 Proxy Server Error
by each website. While fairly uncommon, different web servers do describe this error differently. Here are some common ways you might see it.How You Might See the 502 Error"502 Bad Gateway""502 Service Temporarily Overloaded""Error 502""Temporary Error (502)""502 Proxy Error""502 Server Error: The server encountered a temporary error and could not complete your request""HTTP 502""502. That's an error""Bad Gateway: The proxy server received an invalid response from an upstream server""HTTP Error 502 - Bad Gateway"The 502
502 Server Error Google Drive
Bad Gateway error displays inside the Internet browser window, just as web pages do.Twitter's famous "fail whale" error that says Twitter is over capacity is actually a 502 Bad Gateway error (even though a 503 Error would make more sense).A Bad Gateway error received in Windows Update generates a 0x80244021 error code or the message WU_E_PT_HTTP_STATUS_BAD_GATEWAY. continue reading below our video How to Fix Browser Error Codes When Google services, like Google Search or Gmail, are experiencing a 502 Bad Gateway, they often show Server Error, or sometimes just 502, on the screen.502 Bad Gateway errors are completely independent of your particular setup, meaning that you could see one in any browser, on any operating system, and on any device.Cause of 502 Bad Gateway ErrorsOften, Bad Gateway errors are caused by issues between servers online that you have no control over.However, sometimes there is no real issue but your browser thinks there is one thanks to an issue with your browser, a problem with your home networking equipment, or some other in-your-control reason.Note: Microsoft IIS web servers often give more information about the cause of a particular 502 Bad Gateway error by adding an extra digit after the 502 as in HTTP Error 502.3 - Web server received an invalid response while acting as a gateway or proxy which means Bad Gateway: F
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Error 502 Server Error 1
Security How to setup Let's Encrypt TLS How to setup Custom SSL How to order a SSL certificate Secure server error 502 gmail Token Create a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Getting Started General http://pcsupport.about.com/od/findbyerrormessage/a/502error.htm Account Management Integration Guides CMS Integration Guides Framework Integration Guides Custom CDN Integration CDN How To's Tutorials Zone Configuration General Settings Push Zone Create a Push Zone Upload Data to a Push Zone Delete a Push Zone Push Zone Settings Push Zone Subusers Pull Zone Create a Pull Zone Delete a Pull Zone Purge CDN Cache Pull Zone Settings CNAMES Create a Zonealias https://www.keycdn.com/support/502-bad-gateway/ Delete a Zonealias Zone Security How to setup Let's Encrypt TLS How to setup Custom SSL How to order a SSL certificate Secure Token Create a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Knowledge Base Support/Debugging How to solve 502 Bad Gateway Issues? Updated: July 20, 2016 Comments: 1 What does 502 Bad Gateway mean? A 502 Bad Gateway indicates that the edge server (server acting as a proxy) was not able to get a valid or any response from the origin server (also called upstream server). KeyCDN returns a 500 Origin Not Reachable if a 502 Bad Gateway occurred. What does 502 Bad Gateway mean? What are the reasons for 502 Bad Gateway responses? Domain name not resolvable: The domain name is not resolving to the correct IP or it does not resolve to any IP. It is important to note that DNS changes could take same time until they are global fully propagated and active. This is very dependant on the DNS TTL defined per record. Or
This server received an invalid response from an upstream server it accessed to fulfil the request. This usually does not mean that the upstream server is down (no response to the gateway/proxy), but rather that the http://www.checkupdown.com/status/E502.html upstream server and the gateway/proxy do not agree on the protocol for exchanging data. Given that Internet protocols are quite clear, it often means that one or both machines have been incorrectly or incompletely programmed. Fixing 502 errors - general This problem is due to poor IP communication between back-end computers, possibly including the Web server at the site you are trying to visit. Before analysing this problem, you should clear your browser cache completely. If you are surfing server error the Web and see this problem for all Web sites you try to visit, then either 1) your ISP has a major equipment failure/overload or 2) there is something wrong with your internal Internet connection e.g. your firewall is not functioning correctly. In the first case, only your ISP can help you. In the second case, you need to fix whatever it is that is preventing you reaching the Internet. If you get this problem for only some 502 server error of the Web sites you try to visit then it is likely to be a problem at those sites i.e. one of their pieces of equipment is failing/overloaded. Contact the people at those sites. Fixing 502 errors - CheckUpDown Our service monitors your site for HTTP errors like 502. Use of proxies and caching is increasing on the Web. Our CheckUpDown robot will always try to "drill through" to the real computer that actually hosts the Web site, but we do not have complete control over where our HTTP request actually ends up. If only one link in the chain of computers dealing with our HTTP request is broken, then an error such as 502 can easily occur. Please contact us (email preferred) whenever you encounter 502 errors - there is nothing you can do to sort them out. We then have to liaise with your ISP and the vendor of the Web server software so that they can review the flow of IP data traffic between various computers under their control. 502 errors in the HTTP cycle Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle when it communicates with the Web server: Obtain an IP address from the IP name of the site (the site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DN