Symantec Endpoint Protection 14.3 Build 558 Jun 2026

With Microsoft’s aggressive update cadence, SEP 14.3 RU6 officially certifies full driver compatibility with the Moment updates in Windows 11. Previous builds (like 532) occasionally triggered memory integrity (HVCI) warnings; build 558 resolves these false positives.

Previous builds (14.3 RTM) suffered from high RAM consumption by the ccSvcHst.exe process. Build 558 introduced a new ML caching algorithm:

In the ever-evolving landscape of cybersecurity threats, having robust and reliable endpoint protection is crucial for organizations of all sizes. One of the leading solutions in this space is Symantec Endpoint Protection, a comprehensive security platform designed to protect against a wide range of threats, including malware, viruses, spyware, and more. In this article, we'll take a closer look at Symantec Endpoint Protection 14.3 Build 558, one of the latest versions of this powerful security solution. symantec endpoint protection 14.3 build 558

: Added full support for IPv6 communication between Windows, Mac, and Linux clients and the Symantec Endpoint Protection Manager (SEPM). WSS Traffic Redirection

Organizations currently running this build should evaluate their upgrade path in light of the approaching End of Service window. Migrating to 14.3 RU9 or RU10 ensures continued signature updates, access to improved management features, and compliance with organizational security posture requirements. With Microsoft’s aggressive update cadence, SEP 14

In an era of sophisticated cyber threats, securing enterprise endpoints is a critical priority for IT administrators. Symantec Endpoint Protection (SEP) 14.3 Build 558 represents a specific, stable release within Broadcom’s flagship security ecosystem. This build delivers robust defense mechanisms designed to protect physical and virtual endpoints across diverse corporate networks. Overview of Symantec Endpoint Protection 14.3

tool was updated to a newer version to more effectively remove competing security software before installation. Broadcom Community troubleshooting steps for this 2020 build? Client only patch Endpoint Protection 14.3 (14.3.558.0000) Build 558 introduced a new ML caching algorithm:

Choose the option and select Add Client Install Settings .

The integrated firewall, managed through the SEPM (Symantec Endpoint Protection Manager), saw rule processing improvements to reduce latency in high-throughput environments.