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 this week announced that its Microsoft Defender Vulnerability Management solution can now scan Windows devices that are lacking certain agent support. This capability, called "authenticated ...

Though many Windows 10 users opt for third-party antivirus protection, those who use Microsoft Defender may not be getting all of the protection they could. Here’s how to check your settings and what ...

Microsoft pushed emergency patches this week for two zero-day vulnerabilities in Windows Defender, the antivirus software ...

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ...