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Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up-to-date so you can be assured your PC is protected by the latest technology.
Microsoft Security Essentials provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software.
The Microsoft Defender app is available exclusively with a Microsoft 365 Personal or Family subscription. On your PC, Microsoft Defender works with built-in Windows Security to provide additional device protection on your Android, iOS, and MacOS devices.
- (2.6K)
- Windows 11 Version 22000.0 or Higher
- Security
- Overview
- Ready to give it a try?
- Share your security status with family organizers
- Got more questions about installing Defender?
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Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by:
•Scanning the following QR code
•Searching for Microsoft Defender in your app store
•Sharing with your devices, the following link: Copy link
1.Open https://aka.ms/AndroidDefender (or scan the QR code below) on your Android device to go to Microsoft Defender in the Google Play Store.
2.Follow the installation steps on the Play Store page.
3.After installing, sign in with the personal Microsoft account (such as @outlook.com, @hotmail.com, or @live.com) that is associated with your Microsoft 365 subscription.
When you first sign into Microsoft Defender on Android, we'll walk you through a few easy steps that start with setting up web protection. During this process, we'll ask you to give Defender permission to do two things: run in the background and use the Accessibility Service.
If you're part of a Microsoft 365 Family subscription the last step is to decide if you'd like to share your security status with your family organizers. The family organizer is the person who established the Microsoft 365 Family subscription, and any other family members that person has selected to be family organizers.
By sharing your security status, you make it easier for the family organizers to help keep your devices and identity safe. This only shares security and identity threat monitoring information from Defender, not any other information about your device or any of your personal files. For more information see Protect the whole family with Microsoft Defender.
Once that process is done, we'll take you to your Microsoft Defender dashboard and then you're all set.
Next, see Getting started with Microsoft Defender.
Visit the Microsoft Defender Answers community
Learn how to download and install Microsoft Defender on your Android, iOS, Windows, and Mac devices. Microsoft Defender is a security app that helps protect you and your family from threats.
Windows 11 comes with Microsoft Defender Antivirus and other security solutions to protect you from malware, phishing, and identity theft. Learn how to manage Windows Security and explore Microsoft-developed apps that help keep you safe online and off.
Learn how to use Microsoft Defender, an anti-malware app included with Windows, and other security features to prevent viruses and malware. Find out how to update Windows, configure browser settings, and uninstall unwanted antivirus programs.
Download and install Microsoft Security Essentials for free* to protect your PC from viruses, spyware, and other malware. It's easy, efficient, and compatible with Windows 7 and older versions of Windows.
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