From a security architecture perspective, SEP 14.3.12154.10000 is classified as a Next-Generation Antivirus (NGAV) solution with EDR (Endpoint Detection and Response) capabilities (if the EDR license is active).
No software is perfect. Administrators have reported the following with this build:
| Issue | Symptom | Workaround |
|-------|---------|-------------|
| High CPU after Windows Update | ccSvcHst.exe spikes to 50%+ | Exclude C:\Windows\CbsTemp from real-time scanning |
| Mac agent kernel panic on Big Sur 11.3+ | System freezes during sleep | Update to SEP 14.3 RU2 (build 14.3.211.5212) or later |
| SEPM login loop after upgrade | Admin page redirects to login | Clear browser cache and restart SEPM services (tomcat, semwebsvcs) |
| Conflict with CrowdStrike Falcon | Block of kernel drivers | Add mutual exclusions: disable SEP’s “System Isolation” if Falcon is present |
Note: Broadcom has officially declared end of support for Windows 7 without ESU as of January 2023, even if using this build. Symantec Endpoint Protection 14.3.12154.10000 P...
| Item | Details | |------|---------| | Minimum base version | 14.3 RU1 (14.3.1169.0000) or later | | Supported OS | Windows 7 (with ESU), 8.1, 10, 11, Server 2012 R2–2022; macOS 11–13; RHEL/CentOS 7–9 | | SEPM requirement | 14.3 RU1+ (cloud-managed agents don’t require on-prem SEPM) | | Rollback possible? | Yes, but requires uninstallation of the patch (not recommended — use image backup) |
Organizations still using this build beyond March 2025 are strongly advised to upgrade or face unpatched zero-day risks.
| Scenario | Recommendation | |----------|----------------| | Stable environment, no issues | Stay until next security patch is released. | | Need cloud management | Upgrade to 14.3 RU8+ (or SES Cloud). | | Windows 11 22H2+ with Core Isolation | Test carefully – older drivers might trigger memory integrity warnings. | | Heartbleed/Log4j patching required | Upgrade to 14.3 RU6+ (includes broader vulnerability fixes). | From a security architecture perspective, SEP 14
Many organizations delay upgrades due to change fatigue, but running SEP builds older than 14.3.12154.10000 exposes endpoints to several notable risks:
Additionally, this version was the first SEP build to fully support Microsoft’s DHA (Device Health Attestation) for Zero Trust architectures.
Use the standard Add/Remove Programs → “Symantec Endpoint Protection” → Uninstall (requires Tamper Protection password if set). Additionally, this version was the first SEP build
For bulk removal:
smc -stop
msiexec /x GUID /quiet
(Get GUID from HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall)