ISRG Root X2 (new ECDSA root) - coming soon cannot handle certificates without a CRL.Windows Live Mail (2012 mail client, not webmail).cannot handle SHA-2 signed certificates.PS4 game console with firmware >= 5.00 (version that added ISRG Root X1 unknown).Blackberry >= 10.3.3 (version that added ISRG Root X1 unknown).Kindle > v3.4.1 (version that added ISRG Root X1 unknown).Jolla Sailfish OS > v1.1.2.16 (version that added ISRG Root X1 unknown).macOS = precise / 12.04 and = squeeze / 6 and = 8u101 and = 7u111 and = v3.11.9 and v10 (version that added ISRG Root X1 unknown).These platforms would have worked up to September 2021 but will no longer Platforms that trust DST Root CA X3 but not ISRG Root X1 Soon, new versions of Chrome will also have their own root store. Firefox is the exception: it has its own root store. Debian >= jessie / 8 (with updates applied)īrowsers (Chrome, Safari, Edge, Opera) generally trust the same root certificates as the operating system they are running on.
#GET OLDER VERSION OF SKYPE FOR MAC UPGRADE#
iPhone 5 and above can upgrade to iOS 10 and can thus trust ISRG Root X1.
#GET OLDER VERSION OF SKYPE FOR MAC UPDATE#
Windows >= XP SP3 ( assuming Automatic Root Certificate Update isn’t manually disabled).If that doesn’t identify the problem, ask for help in our Community Forums. Test your site with SSL Labs' Server Test. If you’re having an issue with modern platforms, the most common cause is failure to provide the correct certificate chain. If your certificate validates on some of the “Known Compatible” platforms but not others, the problem may be a web server misconfiguration. From October 2021 onwards, only those platforms that trust ISRG Root X1 will validate Let’s Encrypt certificates ( with the exception of Android). Prior to September 2021, some platforms could validate our certificates even though they don’t include ISRG Root X1, because they trusted IdenTrust’s “DST Root CA X3” certificate. The main determining factor for whether a platform can validate Let’s Encrypt certificates is whether that platform trusts ISRG’s “ISRG Root X1” certificate.
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