Extract the downloaded SEP 14.3 installation files. Right-click Setup.exe and select Run as administrator .
Before initiating the upgrade, ensure your environment meets the minimum standards to prevent installation failures. symantec endpoint protection upgrade 14.2 to 14.3
| Component | 14.2 | 14.3 Requirement | |-----------|------|------------------| | | Windows 2008 R2+ | Windows Server 2012 R2+ (or 2016/2019/2022) | | SEPM DB | SQL 2008 R2+ | SQL 2012 SP4+, 2016, 2017, 2019 | | Client OS | XP/Vista/7/8/10 | Win 7 SP1 / 8.1 / 10 / 11, Server 2008 R2+ | | Java | Bundled JRE 8 | Bundled JRE 11 | Extract the downloaded SEP 14
Broadcom (which now owns Symantec) is pushing heavily toward the cloud. If you are a purely "air-gapped" or on-premises purist, you may find the 14.3 interface and documentation nudging you toward cloud features you might not want. | Component | 14
After completing the deployments, you must verify that both management systems and client endpoints are reporting correctly. Check SEPM Services
Upgrading your Symantec Endpoint Protection (SEP) environment from version 14.2 to 14.3 is a critical step to ensure your enterprise network remains protected against modern cyber threats. Version 14.3 introduces enhanced cloud integration, improved machine learning engines, and critical security patches that resolve vulnerabilities present in older builds.
The Symantec Endpoint Protection Manager must always be upgraded before upgrading any client software. Step 1: Run the Installer