Symantec Endpoint Protection 14.3 Ru6 System Requirements May 2026
| Operating System | Edition | Service Pack / Version | |----------------|---------|------------------------| | Windows Server 2022 | Standard, Datacenter | 21H2, 22H2 | | Windows Server 2019 | Standard, Datacenter, Essentials | Any | | Windows Server 2016 | Standard, Datacenter, Essentials | Any | | Windows Server 2012 R2 | Standard, Datacenter, Essentials | Update KB2919355 required | | Windows Server 2012 | Standard, Datacenter, Essentials | – |
Note: SEP 14.3 RU6 does not support Windows Server 2008 R2 or earlier. Also, 32-bit server operating systems are completely unsupported.
Overview
Symantec Endpoint Protection (SEP) 14.3 RU6 is an incremental release of SEP 14.3 that includes fixes and updates. Below is a concise, practical reference you can use as a blog post describing the hardware, software, OS, and other requirements for deploying SEP 14.3 RU6 in enterprise environments.
Windows
Linux
Mac
| Component | Requirement | Review / Notes |
|-----------|-------------|----------------|
| OS | Windows Server 2016, 2019, 2022 (Standard/Datacenter)
Windows Server Core supported (limited UI) | No Windows Server 2012/R2 (EOL). No Linux for SEPM itself. |
| RAM | 8 GB minimum (16+ GB recommended for > 1,000 clients) | Under 8 GB leads to slow console response and DB issues. |
| CPU | 4+ cores (2.5 GHz+) | Database operations (embedded or remote SQL) are CPU-heavy. |
| Disk | 50 GB minimum (100+ GB recommended) | For logs, content updates, and database growth. Use SSD. |
| Database | Embedded (Simplified) or SQL 2017/2019/2022 | Embedded suitable only for < 500 clients. For production, always use external SQL. |
| Browser | Chrome, Edge, Firefox (modern) | IE mode no longer required. |
| .NET | .NET Framework 4.8 | Required for console & services. | symantec endpoint protection 14.3 ru6 system requirements
Supports Windows, Mac, Linux, and some legacy UNIX.
A: Yes, but you must exclude NTDS.DIT and SYSVOL from real-time scans via a custom policy. Allocate at least 4 CPU cores and 8 GB RAM.
If you are upgrading from an older version, verify the following baseline: | Operating System | Edition | Service Pack
| From Version | Supported Direct Upgrade | Notes | |--------------|--------------------------|-------| | SEP 14.3 RU1–RU5 | Yes | Full upgrade via SEPM or push client | | SEP 14.2 | Yes (via SEPM only) | Requires .NET 4.8 on server | | SEP 14.1 or 14.0 | No | Must uninstall old agent; upgrade SEPM in stages | | SEP 12.x | No | Clean OS recommended; migrate policies manually |
Important: Backup your SEPM database and keystores before any upgrade. RU6 changes the underlying database schema, and rollback is not automatic.