Learn how to open and configure Windows Defender settings in Windows 11 to protect your PC from viruses and online threats.

Defender will continue to provide security even for unsupported Windows 10 PCs. But Microsoft still wants you to move to Windows 11.

Microsoft plans to remove Defender Application Guard from Office by December 2027, starting with the February 2026 release of ...

Microsoft to retire Defender Application Guard from Office by 2027, replacing it with Protected View for a unified, lighter ...

Microsoft Defender Application Guard’s Hyper-V malicious detection is being abandoned in favor of a faster rules-based design ...

Microsoft says the KB5007651 Microsoft Defender Antivirus update triggers Windows Security warnings on Windows 11 systems saying that Local Security Authority (LSA) Protection is off. LSA Protection ...

Microsoft has deprecated SmartScreen on Internet Explorer and IE Mode within Windows 11. It has also issued some ...

It’s easy to believe the threats are all "advanced," but for everyday Windows users, the majority of compromises still come ...

Microsoft had recently released new Defender anti-malware update package for Windows OS installation images, ie, for Windows Imaging Format (WIM) and VHD (Virtual Hard Disk) formats. The new ...

There is (or was) a vulnerability in Windows Defender, but you don't have to worry about it. That's the short version. The longer version, for those who are interested, is that Microsoft detected a ...

Why it matters: Microsoft has released a crucial bug-fixing update to its Windows Defender antimalware application. Its arrival means that some unlucky Firefox users should now get a much smoother and ...

The problem arose when Firefox was running, leading Windows Defender’s Antimalware Service Executable (Msmpeng.exe) to act up, causing a significant increase in CPU usage. Users reported that their ...