Upgrading from Symantec Endpoint Protection (SEP) 14.2 to 14.3 is an in-place process that requires careful preparation of the management server before rolling out client updates. Phase 1: Pre-Upgrade Preparation
The SEPM system account lacks rights, or the remote client has no admin share. Fix: Use the "Client Deployment Wizard" to specify a domain admin account. Alternatively, switch to the Logon Script or Email deployment method instead of push. symantec endpoint protection upgrade 14.2 to 14.3
. Check the box for "Enforce client upgrade to version" and select the 14.3 package. Manual Export: If you prefer manual installation, go to Admin > Install Packages Upgrading from Symantec Endpoint Protection (SEP) 14