HTTP 520: What is it and how to fix it - Robotecture

5XX errors are usually a sign of poor web server configuration. It can be hard to diagnose the issue without technical expertise. In this blog post, we’ll explore what an HTTP 520 error is and how to fix it. By the end of this article, you should have all the information necessary to understand what an HTTP 520 error is and how to address it.Table of ContentsWhat is Cloudflare error 520?What Causes Cloudflare Error 520?How to fix http 520 errorInvestigate server’s error logsRestart PHP applications on your origin serverWhitelist your Cloudflare origin server IP addressDisable .htaccessCheck response headers from Your Cloudflare origin web serverLighten your cookie loadMake sure your Cloudflare DNS records are correctUse a cURL commandAnalyze your server trafficCheck For Non-HTTP Errors In Your Cloudflare LogsDisable CloudflareHow to avoid Cloudflare Error 520 In The Future?All HTTP status codes by categoriesInformational responsesSuccessful responsesRedirection messagesServer error res...