Microsoft antivirus protection

When your PC is protected by Windows Defender Antivirus you are receiving comprehensive protection for your system, files and online activities from viruses, malware, spyware, and other threats. Peace of mind has never been this easy.
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Virus protection and removal

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Malware protection and removal

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Spyware detection and removal

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Boot-time protection

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Real-time protection

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Cloud-based protection

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Network inspection

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FREE automatic updates*

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You already own it.

Windows Defender Antivirus is built-in to Windows 10. There’s nothing to buy and nothing to install. No configuration, no subscriptions, and no nagware.