查了一下，貌似起码要到10.4.2 mp3版本以上才支持，求高手给个链接，谢谢
pdate History
Added support for Removed support for Affected product version ReleaseDate
macOS Catalina (10.15.x)
Symantec Encryption Desktop 10.4.2 Maintenance Pack 4 (MP4), including all the components Decemeber 2019macOS Sierra (10.12.x)
OS X El Capitan (10.11.x)
OS X Yosemite (10.10.x)
OS X 10.9.5
Symantec Encryption Desktop 10.4.2 Maintenance Pack 4 (MP4), including all the components Decemeber 2019 Symantec Endpoint Protection 12.x Symantec Encryption Desktop 10.4.2 Maintenance Pack 3 (MP3) July 2019 Microsoft Outlook 2011 for Mac Symantec Encryption Desktop 10.4.2 Maintenance Pack 3 (MP3) July 2019
