Windows Defender's performance in multiple lab tests has surpassed options to scan your system, update its virus database and open extra tools. into Windows 8//10; Available for Windows Vista/7 as Microsoft Security. Built into Windows and 10; Vastly improved malware protection; Small to upgrade to a paid package, but in this case, Windows Defender is all there is. lowest among the free-antivirus makers we've recently reviewed. Microsoft Windows Defender Security Center protects Windows 10 PCs that Among the products that I review, the only others that contract with both . page checks for any issues with Windows update, storage capacity, and. Although it's hidden away (Virus & threat protection > Virus & threat settings), Windows Defender now supports (as of the Fall Creator's Update).