The move from 14.2 to 14.3 was not just a version increment; it was a strategic pivot . It moved the product from a legacy on-premise antivirus solution to a modern, cloud-hybrid endpoint security platform.
: Support varies by build. Note that 14.3 RU6 and later no longer support 32-bit Windows operating systems. symantec endpoint protection upgrade 14.2 to 14.3
Manually stop the SEPM services (Manager, API, and Web Server) to prevent file locking. Run Installer: The move from 14
| 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 | Note that 14
