Symantec Endpoint Protection Upgrade 14.2 To 14.3 [new] May 2026
Smooth Transition: Upgrading Symantec Endpoint Protection (SEP) 14.2 to 14.3
Title: Step-by-Step Guide: Migrating Symantec Endpoint Protection 14.2 to 14.3
- Current version: Confirm you are on SEP 14.2 RU1 (14.2.1020) or later. If you are on 14.2 (initial release) or 14.1, you should upgrade to the latest 14.2 build first, as the jump from very old builds to 14.3 can cause database migration errors.
- Download the Installer: Log into your Broadcom support portal and download
SEPM_14.3_RUx_Win64_Installation.exe(where RUx is the latest maintenance release, e.g., RU7). - Run as Administrator: Right-click the installer and select Run as Administrator.
- Language Selection: Choose the language that matches your current installation to avoid display errors.
- Installation Type: Select "Upgrade" (not New Installation).
- License Agreement: Accept the terms.
- Database Upgrade Prompt: The installer will detect the existing 14.2 database. It will ask for database credentials (SA or Windows authentication). Click Yes to proceed with schema upgrades. Warning: This is irreversible.
- Web Console Configuration: The installer will migrate your IIS settings for the SEPM console.
- Completion: Once the progress bar reaches 100%, click Finish. The SEPM service will restart.
Upgrading the Symantec Endpoint Protection Manager (SEPM) from 14.2 to 14.3 is generally straightforward, but it requires more prep work than previous "point" updates. symantec endpoint protection upgrade 14.2 to 14.3
Technical Write-Up: Symantec Endpoint Protection Upgrade (14.2 → 14.3)
- Check
C:\ProgramData\Symantec\Symantec Endpoint Protection\*\Logs\for upgrade success. - Run LiveUpdate manually.
- Verify definitions date.
- Test a known EICAR file to ensure detection.