: Direct Download link (legacy/older build reference)
: Once the files are installed, an internet connection is mandatory to contact Norton's servers for product activation and to perform the initial LiveUpdate to download the latest virus definitions. Key Benefits of Using This Method Download and install your Norton device security norton 360 premium offline installer
Windows:
For pure offline protection without any internet activation, consider (open source, no real-time) or Sophos Home (needs cloud console). : Direct Download link (legacy/older build reference) :
Summary
You cannot use cloud features, but the offline installer + periodic manual updates via USB (downloading definition files from Norton’s website on another PC) will keep the signature-based detection current. While recent versions of (v24 and later) primarily
While recent versions of (v24 and later) primarily use a web-based, "thin" installer to ensure users have the most up-to-date files, you can still perform an installation with minimal internet usage through a specific "setup file" workaround. How to Obtain the Offline-Ready Installer