When troubleshooting most 5XX
errors, the correct course of action is to first contact your hosting provider or site administrator to troubleshoot and gather data. The following sections outline:
Note
Cloudflare Support only assists the domain owner to resolve issues. If you are a site visitor, report the problem to the site owner.
Required error details for hosting providerWhen contacting your hosting provider, share the following information:
5XX
error code and message.5XX
error occurred.5XX
error (for example, https://www.example.com/images/icons/image1.png
).The cause of the error is not always found in the origin server's error logs. Be sure to check the logs of any load balancers, caches, proxies, or firewalls between Cloudflare and the origin web server.
Additional details to provide to your hosting provider or site administrator can be found in the error descriptions below. Note that Cloudflare Custom Errors can alter the appearance of default error pages discussed in this page.
Error analytics per domain are available within Zone Analytics. Error analytics provides insights into overall errors by HTTP error code and offers details such as the URLs, source IP addresses, and Cloudflare data centers needed to diagnose and resolve issues. Error Analytics are based on a 1% traffic sample.
To view Error Analytics:
5xx
error code that you want to diagnose.Log Explorer provides access to Cloudflare logs with all the context available within the Cloudflare platform. You can monitor security and performance issues with custom dashboards or investigate and troubleshoot issues with log search. Log explorer allows to build queries filtering for specific Ray ID, which can be useful to investigate HTTP Errors.
Error 500: internal server errorFor a complete description of this error refer to the Error 500 page.
Error 502 bad gateway or error 504 gateway timeoutFor a complete description of this error refer to the Error 502/504 page.
Error 503: service temporarily unavailableFor a complete description of this error refer to the Error 503 page.
Error 520: web server returns an unknown errorFor a complete description of this error refer to the Error 520 page.
Error 521: web server is downFor a complete description of this error refer to the Error 521 page.
Error 522: connection timed outFor a complete description of this error refer to the Error 522 page.
Error 523: origin is unreachableFor a complete description of this error refer to the Error 523 page.
Error 524: a timeout occurredFor a complete description of this error refer to the Error 524 page.
Error 525: SSL handshake failedFor a complete description of this error refer to the Error 525 page.
Error 526: invalid SSL certificateFor a complete description of this error refer to the Error 526 page.
For a complete description of this error refer to the Error 530 page.
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