Before installing version 10.5.1, verify that your environment meets the minimum hardware and software prerequisites. Supported Operating Systems
Comprehensive Guide to Symantec Encryption Desktop 10.5.1: Features, Benefits, and Download symantec encryption desktop - 10.5.1 download
: Log in to the Broadcom Support Portal to find your product downloads. Before installing version 10
: Version 10.5.1 still allows for a "standalone" (unmanaged) installation, whereas newer versions (like PGP 11.0.0+) require a connection to a management server. Compatibility Before installing version 10.5.1
Specific legacy macOS versions (check the Broadcom release notes for the exact build matrix matching your exact 10.5.1 maintenance pack). Hardware Prerequisites