S sandrardrago New member May 22, 2025 #2 To fix web server is down error code 521:- Check Server Status: Ensure your origin server is running. Verify IP Blocking: Confirm Cloudflare IPs are not blocked by your firewall. Restart Web Server: Reboot Apache, Nginx, or your hosting server. Check SSL Settings: Match SSL settings between Cloudflare and your server.
To fix web server is down error code 521:- Check Server Status: Ensure your origin server is running. Verify IP Blocking: Confirm Cloudflare IPs are not blocked by your firewall. Restart Web Server: Reboot Apache, Nginx, or your hosting server. Check SSL Settings: Match SSL settings between Cloudflare and your server.
