Full (Strict) results in 526 error even with Origin CA cert


I’ve generated an Origin CA cert from cloudflare and put both the PEM file and Key file on my server.

Then I also referenced the 2 files in my 443 virtual host file /etc/httpd/conf.d/ssl.conf

I’ve also forced HTTP to HTTPS on CloudFlare as well.

But then, I found that only Full Mode will work properly. The Full (Strict) mode always return 526 invalid cert error.

How do I resolve this issue so that I can use Full (Strict) mode?


Try unproxy your subdomain, wait for few minutes and then visit your site again. And then, click the “Not Secure” button on the upper-left then click “Certificate (invalid)” button. You should be able to see what cert your server is serving.

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