Are there still browsers out there that throw an error on Let's Encrypt SSL certs?

[siderea@universeodon.com]

Are there still browsers out there that throw an error on Let's Encrypt SSL certs?

[glyph@mastodon.social]

@siderea netscape navigator 3 on classic macOS, maybe? were there *ever* current, supported browsers that didn’t work with LE certs?

[whbboyd@infosec.exchange]

@siderea The share of old-enough Android versions not to have the ISRG root in their root store (7.1 and earlier) is something like 2%, apparently. That was the major segment people were concerned about at the time the IdenTrust cross-sign expired (when it was more like 5%); I'm not sure if there were (or are) other platforms of any significance no longer receiving root store updates. (Ancient versions of iOS or people still running Windows XP, maybe?)