setup.exe /unmanaged /quiet

✅ :

or (depending on version):

If you download the full Symantec_Endpoint_Protection_ _Full_Installation_ .exe file, you can extract it to find the unmanaged client installers in the SEP (32-bit) or SEPx64 (64-bit) folders.

The Symantec Endpoint Protection Unmanaged Client is a valuable component of the SEP solution that provides comprehensive protection for laptops, desktops, and servers without the need for active directory integration or a full SEP management infrastructure. By following the steps outlined in this paper, organizations can easily download and install the Unmanaged Client, ensuring that their systems are protected against various types of threats.