How to Fix 502 Bad Gateway Error in cPanel

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What 502 Bad Gateway Means

Proxy error: Server acting as gateway received invalid response from upstream.

Common Causes

  • PHP-FPM down or misconfigured
  • Cloudflare origin issues
  • Server overload
  • Firewall block

Troubleshooting Steps

Check Service Status

cPanel → Metrics → Service Status → Look for PHP-FPM or Apache issues.

Restart PHP-FPM

Contact host or use WHM if available.

Pause Cloudflare

Test if issue is origin or CDN related.

Solutions Table

CauseSolution
PHP-FPM downHost restart service
Resource limitOptimize site
FirewallCheck CSF/ConfigServer
Bad proxy configCheck Cloudflare SSL mode


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