› us › homeAntivirus for Windows and macOS devices | ESET 2. Download the ESET NOD32 Antivirus installer file here. 3. Double-click the installer file to begin the installation and follow the on-screen instructions. 4. Activate your protection by logging in to, or creating, your ESET HOME Account, or by inserting your unique license key. More details about product installation and activation can be ...