Hi Team, I noticed that ISRG Root X2 certificate which is cross signed by 'ISRG Root X1' is about to expire by September 2025. Do you have a plan to renew it? if so, when can we find the renewed certificate listed in the Certificates web page please?. If not, is it fine to migrate to ISRG Root X2 (s…

Let's Encrypts new ECDSA intermediates (Ex) have a direct signature to both ISRG Root X1 and ISRG Root X2. This removes any need for a cross sign from ISRG Root X2 to X1, as the intermediates have a direct link already. This was deployed in 2024: Deploying Let's Encrypt's New Issuance Chains Since …

ISRG Root X2 (Cross-signed by 'ISRG Root X1')

Issuance Tech

Osiris July 11, 2025, 4:34pm 15

Sooo, IBM z/OS I guess?

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ISRG Root X2 (Cross-signed by 'ISRG Root X1')

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