Best Free Antivirus 2024 Download Windows 10. These free antivirus software programs for windows protect against spyware, trojans, keyloggers, viruses, malicious urls, and more. Even though windows defender has.

In test after test, avast antivirus for windows performed well for malware detection, with options ranging from avast free antivirus software to avast premium security. We’ve tested and ranked the best free antivirus apps.