If you have landed on this post, you and your website visitors are encountering an error message, either ‘Error code 521 Cloudflare’ or ‘Error 521: Web server is down,’ on the web browser. Error 521 occurs when the origin web server refuses connections from Cloudflare. It simply indicates that the website is experiencing server-side issues and is very commonly found in websites integrated with Cloudflare. We know such downtimes can severely affect your website traffic and revenue, …
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