Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com ), so withholding your domain name here does not increase secrecy, but …

"How to update it?" That depends on exactly what you mean by "it". If you mean "the old cert", then there is no update to it - it expired and was replaced by a newer one. It was known that older clients would not even know about this newer one, so it was cross-signed with an older one. But that o…

@snvs , the compatibility of Let's Encrypt certificates was permanently reduced by the root certificate expiration: Certificate Compatibility - Let's Encrypt The main determining factor for whether a platform can validate Let’s Encrypt certificates is whether that platform trusts ISRG’…

Hi Sir, certificate is "R3 ISRG Root X1" it is opened in firefox browser but not opened in chrome from October 1st 2021. In chrome broser showing error like "Your connection is not private Attackers might be trying to steal your information from unitedscientificgroup.org (for example, passwords, m…

Please check the chain being served: [image] openssl s_client -connect unitedscientificgroup.org:443 -servername unitedscientificgroup.org CONNECTED(00000005) depth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1 verify return:1 depth=1 C = US, O = Let's Encrypt, CN = R3 verify r…

Sir, I have less knowledge in ssl. So what is the solution and which command i will use (aws certbot). Please suggest me sir

Please review the vhost config files used in the web server.

Hi, From October 1st 2021 on worlds Let's Encrypt SSL old certificates not working old operating systems. How to update it?

Topic		Replies	Views	Activity
Users of old devices unable to use my website due to Sept. LE expiration Help	5	871	December 19, 2021
OS X 10.11 - Clients not connecting to site with Let's Encrypt certificates Help	16	31953	November 5, 2021
Certificate chain validation fails on OLDer android devices Help	6	1306	April 15, 2024
I have just found this: - https://mjtsai.com/blog/2021/09/24/some-web-sites-will-stop-working-with-el-capitan-and-older/ The Let’s Encrypt Root Certificate, the IdentTrust DST Root CA X3 certificate, has expired Help	5	534	May 13, 2022
Certificate chain no longer includes ISRG Root X1? Help	10	3357	December 24, 2023