I have my domain.com and a free ssl from infinityfree, is it possible to use the same ssl certificate on my subdomain?
I’ve already tried adding cname on my subdomain and it is giving me “The required CNAME record could not be found” error. I tried _acme-challenge.subdomain and _acme-challenge.www.subdomain as an example but it is not working
Yes, you can get free ssl from infinityfree tool for your addon domain, but as far as I know, the infinityfree ssl certificate tool is not available for subdomains.
Try to use other ssl provider like Cloudfare so your subdomain will get free ssl, or read the above support link.
Thanks for the info. My only problem is that I can’t access my subdomain wordpress admin due to no valid ssl error even if I choose http:// , is there a way to access the wp-admin without ssl?
If you already have an SSL certificate installed on your domain, your “wp-admin” dashboard and any of your subdirectories under your primary domain is covered and protected by your SSL certificate.
Then don’t access your site with the https:// protocol since you said it yourself that you don’t have an SSL certificate installed on your subdomain. Obviously it will produce that error since you don’t have a valid and trusted SSL certificate.