Symantec Endpoint Protection 14.3 Build 558 //top\\ Jun 2026

Build 558 was the first build to fully integrate the "SEP Client" with the cloud management dashboard (though on-prem remains an option). The agent includes telemetry connectors that automatically forward file hash data to if deployed.

For technical details specific to this build, you can refer to the following official types of documentation: Release Notes for SEP 14.3 symantec endpoint protection 14.3 build 558

Symantec Endpoint Protection OS | Specs, reviews and EoL info Build 558 was the first build to fully

Performance, security, and management improvements in this mature but still-relevant endpoint protection platform. reviews and EoL info Performance

Affected organizations typically either rolled back to version 14.2.5323.2000 or manually stopped the SEP service ( smc -stop ) to complete software installations. Evolution and Current Status