As the title says, I’m having a weird issue with the SSL certificate.
The certificate works fine, and my website loads securely, when I load my website (https://www.red-pine.ca) on all my browsers (Firefox, Chrome, Edge) on my WINDOWS computer. No issues there.
However, when I load my site on my Apple iMac computer in the browsers Safari and Chrome, I get a message saying “Your connection is not private” and states the certificate is not valid. Even weirder is that it works fine in Firefox on the mac.
This suggests to me there might be an issue with Safari and Chrome on the iMAC.
Does anyone have any clue why this might be happening? I’ve tried a bunch of things and nothing has worked. My SSL cert is from Let’s Encrypt.
TL;DR: My site loads securely on all browsers on my Windows PC. But the certificate is “not valid” when I load my site Safari and Chrome on my iMac.
What is going on? Any help or suggestions are welcome.
Thank you very much for checking! Glad it works.
I do seem to have ISRG Root X1 but it hasn’t made any difference.
My iMac is old…2011…perhaps it’s just too old.
Firefox has its own Root Store composed my Mozilla, that’s why it works.
But Chrome and Safari use the local computer’s Root Store, and if it selects DST Root CA X3, it sees that it is expired and spoils the Chain of Trust.
If the computer does not have the latest updates, it will not know that ISRG Root CA X1 replaces DST Root CA X3, therefore it has no use for it.
Hope this provides some insight.