1 Download Software Go to id.mcafee.com/login sign in and click "Download to more devices". Note: If you do not yet have an account or have not yet activated the product key follow the steps for registration first: McAfee Registration Windows 2 Next click on "Download on this device". 3 Click on "Download". 4 Click on "Agree and download". 5 Open the downloaded file. TIP: If the file does not show look at the lower left corner on your keyboard and hold the buttons Ctrl and J Click on "Install". After the installation is done, click 'Close'. Your device is now protected.