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The big transition happened in October 2021-- that's when Let's Encrypt's root stopped being cross-signed by IdenTrust (allowing older devices that had the Ide
by JonathonW 4y ago
The big transition happened in October 2021-- that's when Let's Encrypt's root stopped being cross-signed by IdenTrust (allowing older devices that had the IdenTrust root but not the ISRG/Let's Encrypt root to still validate Let's Encrypt certs): https://letsencrypt.org/docs/certificate-compatibility/ https://letsencrypt.org/docs/certificate-compatibility/
- sgt 4y agoI corrected my message - but I am still pretty sure that some of our Ubuntu servers broke that day, despite having been updated. Unfortunately I can't remember the details. Good to know that this didn't affect most phones etc.