For most people using a supported and fully updated Windows 11 computer, yes: Microsoft Defender Antivirus and the other protections inside Windows Security are sufficient as the primary antivirus.

Microsoft has resolved a bug that caused Windows Defender to crash after a recent security update, resulting in 0xc0000005 ...

Your antivirus is probably just fine; here's how to check.

Use left and right arrow keys to seek audio. For years, installing a third-party antivirus on a Windows PC felt non-negotiable. Today, however, the landscape has changed. Microsoft has improved its ...

A weird bug has been discovered in Windows Defender's real-time notification system that causes it to suck up CPU resources. Run this free utility to see if it's affecting your rig. Share on Facebook ...

To fix high memory usage by Antimalware Service Executable on Windows 11, try turning off real-time protection, uninstalling pirated apps, scanning for malware, rescheduling Windows Defender scans, or ...

To use Windows Defender ATP (Advanced Threat Protection), onboard your devices to the platform using Configuration Manager, Microsoft Intune, or manual installation. Access the Microsoft Defender ...

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 ...

Best Antivirus Best Antivirus Software for Windows PCs in 2026 Discover the highest ranked antivirus programs for Windows 10 and 11. See whether you need to save or splurge to protect your device, ...

The tactic disabled endpoint defenses as intended, but also accidentally broke the ransomware’s encryption process.