If you manage a website, seeing a “Web Server is Down” error is enough to make your heart skip a beat. Your site is returning a “521 Web Server Is Down” message to every visitor. Cloudflare connected to your server’s IP successfully, but nothing answered back on port 80 (HTTP) or 443 (HTTPS). In short: … Continue reading The Ultimate Guide to Fixing Cloudflare Error 521: Web Server Is Down