[Sophos XG] SFOS 18.5.2 MR2-Build380 firmware giving SSL errors for Let's Encrypt?

[Garacesh]

Anybody else had this?

 

Updated from SFOS 18.5.1 MR-1-Build326 to SFOS 18.5.2 MR2-Build380 last night, and today it's throwing SSL errors for anything using Let's Encrypt.

I've double-checked, and even re-uploaded all 4 ISRG root X1 and X2 certificates, as well as R3, R4 and E1. And yet still, nothing.

 

Rolled back to SFOS 18.5.1 MR-1-Build326 and everything magically works again.

[Wave9_Lee]

probably a red herring but coincidental;

https://www.theregister.com/2022/01/26/lets_encrypt_certificates/

 

We've a lot of users on MR2 using Lets Encrypt with no issues that we can see currently.