Kintify

Kintify Fix · cdn

Kintify Fix: Cloudflare 5xx Error

Kintify Fix answer

Check origin is reachable from a non-cf ip, then allow cloudflare ips at the origin firewall. before rolling back.

Generated using Kintify Fix — production-safe recommendations

Cloudflare 5xx codes each point to a specific origin problem — 521 means origin down, 522 means origin timed out, 520 means.

Check origin is reachable from a non-CF IP and allow Cloudflare IPs at the origin firewall.

Kintify Fix tool

kintify fix

Kintify Fix steps

  1. 1

    Confirm origin is reachable from a non-CF IP

  2. 2

    Allow Cloudflare IPs at the origin firewall

  3. 3

    Increase origin keepalive timeout

Common causes

  • Origin server down or overloaded
  • Firewall blocking Cloudflare IP ranges
  • Origin keepalive too short

Kintify Fix FAQ

What causes Cloudflare 5xx Error?
Origin server down or overloaded and Firewall blocking Cloudflare IP ranges are the most common causes.
How do I fix Cloudflare 5xx Error?
Check origin is reachable from a non-cf ip, then allow cloudflare ips at the origin firewall.