It is important that you download the free version of your antivirus prior to you buy the paid version. The trial version lets you know whether the product you want to purchase works with your particular device. By using this trial edition, you'll be able to understand how the product works and what security features you'll receive when you install and download an upgrade to the premium version Webroot. To access Webroot's download for free simply visit the official Webroot site that is located at Webroot.com/safe.