Try 30 day free trial for antivirus free download.. Download the newest version that can be activated with a purchased license or as a free 30-day trial. Download Now. ESET NOD32 Antivirus runs on any system with Microsoft® Windows® 10 , 8.1, 8, 7, Vista, and Microsoft Windows Home Server 2011. Product requires an  . ESET software provides advanced proactive antivirus protection. Download the award-winning ESET NOD32 Antivirus or ESET Smart Security now!