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Please add Let's Encrypt CA as trusted certificate.

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My website has a certificate from Let's Encrypt, which is a trusted authority for Google and IEs, but when I open in mozilla, I get a warning page that mozilla can't verify the certificate as trusted. As far as root certificate is concerned, I can't put the CA bundle to my website, as there is no option for that given by the hosting provider to free users. You can help me by adding Let's Encrypt CA to your trust list or by automatic downloading the root of that authority as other web browsers do. Please resolve this issue.

My website has a certificate from Let's Encrypt, which is a trusted authority for Google and IEs, but when I open in mozilla, I get a warning page that mozilla can't verify the certificate as trusted. As far as root certificate is concerned, I can't put the CA bundle to my website, as there is no option for that given by the hosting provider to free users. You can help me by adding Let's Encrypt CA to your trust list or by automatic downloading the root of that authority as other web browsers do. Please resolve this issue.
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Hi Ashish, I use Let's Encrypt, too. It's built into the CPanel, so I basically don't do anything except let it auto-renew. So much better than buying certificates. Can you load it? jeffersonscher. com (we currently have a block on links).

I don't know why your site wouldn't serve the intermediate certificates. How is Let's Encrypt set up on your hosting?

Anyway, Firefox caches verified intermediate certificates as you browse, so if your visitors have previously opened pages on a Let's Encrypt site that uses the same intermediates, then they'll be able to open your pages, too.