Learn how to download and install Microsoft Defender on your Android, iOS, Windows, and Mac devices with a Microsoft 365 subscription. Microsoft Defender helps protect you and your family from threats across all your devices.

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

Learn how to use the Windows Security app to safeguard your device against viruses, malware, and ransomware. Find out how to access features and settings such as real-time protection, scan options, allowed threats, and more.

The Windows Security app is a built-in solution that protects your device and data from various threats. It includes 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 Microsoft Defender to check your device for malware on Windows, Android, or Mac. Find out the signs of infection, the types of scans, and how to run Microsoft Defender Offline for a deeper scan.

You can use the Windows Security app to view and manage the status of Windows Firewall. You can turn the firewall on or off, and access advanced settings for different network types, including domain (workplace), private (trusted), and public (untrusted) networks.

Microsoft Defender can help protect your entire family's Windows, Android, and Mac devices from malicious apps and other malware.

Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

The settings page of the Windows Security app allows you to configure security providers, notifications, and determine the version of the app. The page is divided into the following sections:

Microsoft Defender helps easily manage your online security in one centralized view, with industry-leading cybersecurity for you, your family, and your devices.