Symantec Endpoint Protection | Upgrade 14.2 To 14.3

Upgrade SEPM before upgrading clients.

Create or edit a group → Set Install Package to 14.3.x.

Deploy:

Monitor Monitor → Deployment.

Despite best efforts, some upgrades fail catastrophically. If the Symantec Endpoint Protection upgrade from 14.2 to 14.3 fails to complete: symantec endpoint protection upgrade 14.2 to 14.3

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. Upgrade SEPM before upgrading clients