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Microsoft Defender Antivirus

Microsoft Defender Antivirus · Redmond, Washington, USA · founded 1975

Plans and prices

Microsoft Defender Antivirus built into Windows

Priced on request

Real-time, always-on antivirus protection · Virus and malware protection · Windows Security integration

Microsoft 365 Personal

Priced on request

1 person · Up to 5 devices simultaneously · 1 TB cloud storage

Microsoft 365 Family

Priced on request

1 to 6 people · Up to 5 devices per person · Up to 6 TB cloud storage

Microsoft 365 Premium

Priced on request

1 to 6 people · Up to 5 devices per person · Up to 6 TB cloud storage

Every plan, in full

On the record

Parental controls
Nomicrosoft.com · read 20 Sep 2026
Password manager
Nomicrosoft.com · read 20 Sep 2026
Protection scope
antivirusmicrosoft.com · read 20 Sep 2026
Ransomware protection
Yesmicrosoft.com · read 20 Sep 2026
Supported platforms
Windows 10,Windows 11microsoft.com · read 20 Sep 2026

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