524 Error not related to host

[phil4]

I suddenly started getting a 524 error on two subdomains on WordPress Multisite hosted at WPengine. WPengine said it’s not their server and the problem is with CloudFlare. I changed the DNS to send traffic directly to WPengine and the sites were working. I changed back to CloudFlare and I got the 524 error again, so I changed back to WPengine.

I don’t know what to do to use CloudFlare.

[fritex]

@phil4

524 error on two subdomains

Regarding 524 error, here are some suggestions and tips to check:

Community Tip - Fixing Error 524: A timeout occurred

Error Try the suggestions in this Community Tip to help you fix Error 524: A timeout occurred. Background Error 524 error indicates that Cloudflare made a successful TCP connection to the origin web server, but the origin did not reply with an HTTP response before the connection timed out. Typically, Cloudflare waits 100 seconds for an HTTP response. If the origin doesn’t respond in that time, Cloudflare closes the connection and you’ll see “Error 524: A timeout occurred”. Quick Fix Ideas …

https://support.cloudflare.com/hc/en-us/articles/115003011431-Troubleshooting-Cloudflare-5XX-errors#524error

Are those sub-domains both being cloud at Cloudflare Dashboard?

Common WordPress Errors and Access Logs - Support Center

Moreover, do they both have an SSL certificate installed?

@phil4

WordPress Multisite

@phil4

WPengine

Maybe you would need to have cloud for those DNS records (I assume you are using a CNAME record type?)

Troubleshooting SSL/TLS issues

This tutorial post covers the steps you should take if you have enabled Cloudflare, but HTTPS is not working on the site. If your main domain is secure, but a subdomain is not, please see SSL/TLS not working on subdomain. 1. Check that the DNS record is set to In the DNS app in your Cloudflare dashboard, check that the DNS record for your domain is set to , not . If it is , Cloudflare is disabled on the site and none of the SSL settings will take effect. 2. Check…

SSL/TLS app Settings

SSL/TLS Configuration Video: This tutorial covers basic settings in the SSL/TLS app of the Cloudflare Dashboard, including SSL Mode [Off/Flexible/Full/Full (Strict)], Cloudflare Origin Certificates, ‘Always Use HTTPS’ and ‘Automatic HTTPS Rewrites’. The settings covered here can all be found by visiting Cloudflare.com, logging in, selecting the domain and choosing the SSL/TLS app. [SSL:TLS Button] SSL Modes [|717px;x331px;] Off The connection between your visitor and Cloudflare and Clou…

[phil4]

WPengine said they looked at the suggestions and nothing applies. I tried changing to grey cloud but that did not help. I have 3 subsites on Multisite all using the same theme and all on CloudFlare for a long time without issues. Suddenly while I was adding to a post, one of them stopped working. I then notice that another also stopped working but only the two were not working. The third is still working with CloudFlare.