Jan 23, 2024 · Learn if antivirus software is necessary for Windows 11 devices. Find out about built-in protection and whether Windows 11 needs antivirus software added on.

Protect your privacy, identity, and devices with Windows Security. Explore Windows 11 security features like Microsoft Defender Antivirus that help keep you and your PC safe.

It includes features such as Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, which work together to provide real-time protection against viruses, malware, and other security threats.

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

Nov 18, 2025 · Today's threat landscape is more complex than ever. This new world requires a new approach to threat prevention, detection, and response. Microsoft Defender Antivirus, along with …

Apr 15, 2025 · Use the Virus & threat protection section to see and configure Microsoft Defender Antivirus, Controlled folder access, and 3rd-party antivirus products.

Oct 20, 2025 · Learn how to manage, configure, and use Microsoft Defender Antivirus, built-in antimalware and antivirus protection.

Dec 31, 2024 · Experience the enhanced security and peace of mind that comes with Windows 11. With features like Smart App Control and Microsoft Defender antivirus, you can trust your apps and enjoy …

Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity. Microsoft Defender will also run quick scans of your device on a daily basis, …

Mar 21, 2025 · In independent tests, Microsoft Defender has shown to be quite effective at detecting and neutralizing malware. It performs well compared to other free antivirus solutions. The built-in firewall …