If Windows Defender is missing and is gone or has disappeared in Windows 11/10, here are some suggestions that are sure to help you resolve the issue.

If Windows Defender is not functioning properly or is missing from your Windows 11/10 computer, you can reinstall it within a few minutes and without any technical skills.

Microsoft has confirmed a critical vulnerability in Windows Defender that could leak file content data but advised users to do nothing—here’s why.

Cybercriminals abuse trusted Intel driver to gain kernel access and shut down Windows Defender, enabling undetected malware ...

Recently, Microsoft released a Windows update on the down low that mainly fixes a major problem in Microsoft Defender Antivirus. This was first spotted and reported by Neowin. The update, called ...

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 ...

Fix high memory usage caused by Antimalware Service Executable on Windows 11 with easy steps like disabling real-time protection, removing pirated apps, and more.

Microsoft has confirmed that the August 2025 security updates are causing severe lag and stuttering issues with NDI streaming ...

The latest Windows Server 2025 Insider preview build 26304 has been released. It adds the new Windows Defender Application Control for business.