— Occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain Cloudflare IP addresses. The most common ones are: Offline origin web server application; Blocked Cloudflare requests; Fixes Step 1: Contact NET Support

 — Error 521 happens when Cloudflare's globally distributed reverse proxy servers attempt to connect to your origin over port 80 or 443, but get rejected. The "521" …

 — I am using acme plugin for the same and i am following ACME - Plugin | Kong Docs Everything is working as expected but when i try the step curl https://example.com -k (putting in my actual domain name) The response i am getting is 521 Origin Down 521 Origin Down cloudflare-nginx what could be wrong.

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 — 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 …

 — My setup: Cloudflare (https) → nginx (https) → home-assistant (https) When accessing my site through cloudflare's free account I get constant "reconnecting" toaster pop-up messages which causes the page to refresh. This…

 — https://dash.cloudflare.com>{DOMAIN.TLD}>Get your API key>Origin CA Key>View ... 521 Origin Down > websocket: bad handshake I getting same issue long time, and I don't know how was it resolved, Just a wait. I have no answer. I post best minimal config, it's absolutelly correct.

 — Cloudflare attempted to connect to your origin server on port 80 or 443, but received a connection refused error. Error 521 is commonly caused by security or firewall software and happens if the origin server …

 — But here is a catch, the connection between the Cloudflare and the web origin server remains unencrypted. Full SSL: Unlike Flexible SSL, the encryption is done end to end. This means that Cloudflare encrypts the communication between the visitor and Cloudflare, as well as encrypts the communication between Cloudflare and the origin …

 — 521 Origin Down. v6 v4 h2 https:// uptime apdex(1.0) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0. 5 min 0%. 0.0 ...

 — A 521 error occurs when the origin web server refused the connection from CloudFlare. It means that when tried to connect your origin on port 80 or 443 but received a 'connection refused' error. Something …

 — I believe the reason for this is because there servers are offline

 — Mesheal Fegor is a Web/WordPress Developer and technical writer. His WordPress help articles have been featured on Kinsta and other sites. Mesheal holds a master's degree in computer science.

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 — Error Code 521? Fix it fast! Discover troubleshooting tips to resolve Cloudflare issues & get back online smoothly.

 — If there's an issue with that certificate, the origin server might refuse the connection. This might seem like a lot of potential ground to cover. However, most of these causes are fairly easy to rule out during the troubleshooting process, as …

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 — Occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain …

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cloudflare-nginx

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As a content delivery network (CDN) service, Cloudflare helps speed up websites by making a Transmission Control Protocol(TCP) connection to a site's server after receiving the request from a web browser. When the web server denies Cloudflare's connection requests, the …

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 — you have to wait and try it every 30 to 1 hour i have the same problem and it is not nice and if it will not work. came back and wait for a answer.

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cloudflare-nginx. 1

Origin server downtime: If the origin server hosting your website is down or unreachable, Cloudflare's edge servers will be unable to establish a connection, resulting in Error 521. 2.

 — The encryptions modes can be:. Flexible.All the connections between Cloudflare and your origin are via HTTP. Use this Flexible SSL if you cannot set up an SSL certificate for your domain.

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