Desktop - 10.5.1 Download ((new)) Fix — Symantec Encryption
The driver PGPdisk.sys (version 10.5.1.x) is often flagged as incompatible, preventing these security features from being enabled. The Fixes:
Symantec released an internal hotfix sed_nvme_patch.msi . Install it before running the main setup: Symantec Encryption Desktop - 10.5.1 Download Fix