After a clean installation of Symantec Encryption Desktop for Mac on computers running macOS 10.13.x or later, the System Extension Blocked dialog is displayed, prompting users to approve the third-party kernel extension (KEXT). If users do not approve kernel extension of Symantec Encryption Desktop for Mac signed by Symantec, the user enrollment never happens and Symantec Encryption Desktop does not work as expected.
System Extension Blocked
A program tried to load new system extension(s) signed by “Symantec”. If you want to enable these extensions, open Security & Privacy System Preferences.
To approve and load KEXT of Symantec Encryption Desktop for Mac, perform the following steps:
On the System Extension Blocked dialog, click OK.
Go to System Preferences > Security and Privacy, and click the General tab.
Note: On the Security & Privacy preferences pane, under the Allow apps downloaded from section, the message and the Allow button are displayed only for 30 minutes after the alert. After 30 minutes, the message and the Allow button are no longer displayed. To approve the KEXT of Symantec Encryption Desktop for Mac later, users must manually navigate to the Security & Privacy preferences pane and click the Allow button. Unless users approve, Symantec Encryption Desktop cannot be used.
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