If you try to install Sophos on O.S. that not support Azure Code Signing this will not receive Sophos updates and/or install it
KB5022661—Windows support for the Trusted Signing (formerly Azure Code Signing) program
In the past there was a build that fixed problem but is is no longer supported
October 12, 2021—KB5006669 (OS Build 14393.4704) - EXPIRED
to override problem you might arrange to download new Trusted CA Certificate ( Microsoft Identity Verification Root Certificate Authority 2020) that it is related to ACS from this repository:
PKI Repository - Microsoft PKI Services
start --> certmgr.msc --> local computer --> Trusted Root Certification Authorities --> Certificates
In this way Sophos installation works properly.
