Microsoft antivirus protection

Windows Defender is the No. 1 antivirus on Windows 10, protecting more computers against viruses, malware, spyware, and other threats than any other solution.
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Virus protection and removal
Malware protection and removal
Spyware detection and removal
Boot-time protection
Real-time protection
Cloud-based protection
Network inspection
FREE automatic updates*
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You already own it.

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