While your specific file is for x86 (Windows), the 14.3 RU5 release improved support for newer macOS versions and M1/M2 chips.
Unpack the .rar file using tools like WinRAR or 7-Zip. Symantec_Endpoint_Protection_14.3.8268.5000x86.rar
is a specific build of Broadcom's enterprise security suite designed for 32-bit Windows systems. This version belongs to the SEP 14.3 RU5 (Release Update 5) family, which focuses on integrating advanced threat protection with a smaller client footprint. Technical Overview Version Number: 14.3.8268.5000 Architecture: x86 (32-bit) While your specific file is for x86 (Windows), the 14
After installation, you can verify the build number and definition status by opening the SEP interface and clicking Help > About . Security Warning Symantec_Endpoint_Protection_14.3.8268.5000x86.rar