A bad security intelligence update causes Microsoft Defender to crash during Full and Quick Scans on some PCs. Upgrading to Security Intelligence Update v1.457.236.0 resolves the issue.

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 ...

Microsoft announced on Thursday that it has added agentless malware scanning for servers hosting virtual machines. The new agentless malware scanning capability is available to organizations that have ...

If Windows 11 is sending alerts that you need to turn on virus protection and your PC is unprotected, don't worry.

Microsoft's multi-model agentic scanning system for finding security flaws in software, codename MDASH, has deployed to ...

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology. Microsoft Defender Antivirus does a decent job of securing ...

Microsoft is investigating an issue causing the Defender for Office 365 security software to mistakenly block access to ...

Microsoft Defender Antivirus, formerly known as Windows Defender, is a built-in antivirus and antimalware service that comes with Windows 10, Windows 11 and some versions of Windows Server. In its ...

Windows Defender is the default antivirus on Windows PCs, protecting them against threats such as malware, viruses, and more. While Windows Defender keeps track of all its actions to safeguard your PC ...

Best Antivirus Best Free Antivirus for Windows 10 in 2026: Top Free Protection Options Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing ...