Best Free Antivirus 2024 Windows 11. Best free antivirus for windows 11. 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.
My pick for the best free antivirus software overall is avg antivirus free, which scans for viruses and malware, quarantines unwanted programs, and alerts you to any. Best free antivirus for windows 11.