Symantec Endpoint Protection Upgrade 14.2 To 14.3 May 2026

Go to Clients > right-click your group > Install Packages > Deploy to Group > select the 14.3 client package.

| Test | Expected Result | |------|----------------| | Login to console | Success | | View clients | All previously managed clients appear (green checkmark) | | Deploy a test policy | Client receives policy within 15 min | | Run a manual scan | Works on test client | | Check LiveUpdate | Definitions update successfully | | Review logs | No critical errors in %SEPM_Install%\Logs | symantec endpoint protection upgrade 14.2 to 14.3

Despite best efforts, some upgrades fail catastrophically. If the Symantec Endpoint Protection upgrade from 14.2 to 14.3 fails to complete: Go to Clients > right-click your group >

Crucial Tip: Never attempt to roll back a client without first uninstalling 14.3. Removing the new client manually and re-installing 14.2 will break policy communication. Always use the standard Windows uninstaller control panel. Crucial Tip: Never attempt to roll back a