Learn about getting started with the new Microsoft Defender on your personal devices including Windows, Mac, Android, and iOS.

One of the key benefits of the Windows Security app is its ability to provide real-time protection. Microsoft Defender Antivirus continuously scans your device for potential threats and takes …

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

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

Microsoft Defender is a new security app that helps protect you and your family across all your devices; Windows, Android, Mac, and iOS.

With features like Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, you can easily access and configure robust security settings. Built into Windows, this app ensures your …

Microsoft is committed to improving the user experience across all products, including Microsoft Defender Antivirus. You can help by sharing your feedback using the built-in Windows tools.

Learn how to turn the Windows Firewall on or off using the Windows Security app.

Oct 14, 2025 · Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.

Microsoft Defender's web protection helps protect you against malicious sites that are being used for phishing or spreading malware. Available on Windows, Android, and iOS.