Hi, I just installed Let's Encrypt free SSL for my website at https://www.topwebhosting.tech however my users notifying me on Facebook that they unable to access the site from Windows XP, I also tested my site with Windows XP and get the error: This happened with both Firefox and Chrome, I am not sure because Windows XP problem or Let's Encrypt issues ? Do you have any experience to fix this ? I don't want lost the traffic from Windows XP users. Thanks
You can probably reissue the cert now. This should have been fixed a day or so ago. https://community.letsencrypt.org/t/upcoming-intermediate-changes/13106 N>
Let's Encrypt certificates do not properly work with most XP installations, because their intermediate certificate is not acknowledged by the Windows XP root certificates.