Server Error

HTTP 522 Connection Timed Out

Cloudflare could not negotiate a TCP handshake with the origin server.

Check a URL for HTTP 522

Paste any URL to see whether it currently returns 522. Runs a live HTTP probe and follows redirects.

What does HTTP 522 mean?

HTTP 522 is a Cloudflare-specific error indicating that the TCP connection to the origin server timed out. Cloudflare tried to connect but the origin didn't respond within 15 seconds.

Common Causes

•Origin server is overloaded
•Network issues between Cloudflare and origin
•Firewall rate-limiting Cloudflare requests
•Origin server has keepalive disabled

How to Fix It

1.Check origin server resource usage
2.Enable TCP keepalive on origin
3.Whitelist all Cloudflare IP ranges
4.Check for network routing issues

SEO Impact

Site appears down to all visitors and crawlers. Extended 522s will hurt rankings.

Monitor HTTP 522 with LemWatch

LemWatch detects Cloudflare-specific errors and provides targeted troubleshooting advice for CDN-related issues.

Related Status Codes

Gateway Timeout

Web Server Is Down

A Timeout Occurred

Loop Detected

Network Authentication Required

523

Origin Is Unreachable

522 Connection Timed Out on your platform

Same status code, different fix depending on where you host. Jump to a platform-specific deep dive:

522 in Cloudflare

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