I tested heaps of free antiviruses against thousands of Windows malware files, both old and new. It’s not 100% free, but it has a 60-day money-back guarantee, which gives you 2 full months to see if it’s right for you. 🥇 Norton: Advanced virus and malware protection with extras like webcam protection, a VPN, a password manager, parental controls, dark web monitoring, and more.Short on time? Here’s the best free Windows antivirus for 2024: