Windows Defender is a capable antivirus solution built into Windows itself. Unless you’ve installed a different antivirus program on your Windows 11 or Windows 10 PC, your PC is using it right now.

Microsoft Defender is an essential part of Windows 11 that helps keep your computer safe from all kinds of threats. It's a firewall and antivirus, and contrary to what used to be said a few years ago, ...

Microsoft has removed the ability to disable Microsoft Defender and third-party security software via the Registry to prevent malware from tampering with protection settings. Since Windows Vista, ...