Error 520 while working on Wordpress

I have a running website. When I am working on word press for my website, error 520 occured. I called my hosting company and they asked to contact Cloudflare. I need to add IP address in DNS A record. Guide me

Greetings,

Thank you for asking.

Regarding Cloudflare 520 error, may I ask what kind of suggested troubleshooting steps did you tried so far as stated from the article below? :thinking:

May I ask if the rest of the domain is working ok?
Is this error on some particular request or plugin or WP admin?

May I ask if you can ask them if Cloudflare IPs are allowed at the origin host/server from them? Here is the article:

Nevertheless, Cloudflare IP addresses list can be found here:

Before moving to Cloudflare, was your Website working over HTTPS connection?

Kindly, before doing anything at Cloudfalre settings, you could determine if you have a valid SSL certificate installed at the origin host/server by your web hosting provider or your own VPS/dedicated server following the steps from below:

  1. Use the “Pause Cloudflare on Site” option from the Overview tab for your domain at dash.cloudflare.com .
  2. The link is in the lower right corner of that page.
  3. Give it five minutes to take effect, then make sure site is working as expected with HTTPS.
  4. Check with your hosting provider / cPanel AutoSSL / ACME.sh / Certbot / Let’s Encrypt or some other and renew it accordingly.
  5. Only then should you un-pause Cloudflare and double-check your SSL/TLS setting to make sure it’s Full (Strict).

Could you also write back if your WordPress is configured with “home_url” and “site_url” in the “Options” and working fine over a HTTPS in a different Web browser just for testing purposes.

May I ask what SSL option have you got selected under the SSL/TLS tab at Cloudflare dashboard for your domain ( Flexible, Full, Full Strict … )?

Here is a way to re-check if you correctly setup the SSL for your domain with Cloudflare:

May I ask you to post and share your domain name in bracketed dot [.] notation here with us so we could double-check, troubleshoot and provide some feedback information? :thinking:

Furthermore, the step-by-step instructions from below tutorials could help you to manage DNS at Cloudflare dashboard:

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