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Microsoft Defender Antivirus

Microsoft Defender Antivirus is ranked #5 of 116 in antivirus software on Freedom251, made by Microsoft Defender Antivirus (Redmond, Washington, USA). It runs on Windows.

Microsoft Defender Antivirus plans and pricing

All plans
Microsoft Defender Antivirus built into Windows Not published Real-time, always-on antivirus protection · Virus and malware protection · Windows Security integration microsoft.com · 20 Sept 2026
Microsoft Defender Antivirus built into Windows Not published Real-time, always-on antivirus protection · Virus and malware protection · Windows Security integration microsoft.com · 20 Sept 2026
Microsoft 365 Personal Not published 1 person · Up to 5 devices simultaneously · 1 TB cloud storage microsoft.com · 20 Sept 2026
Microsoft 365 Personal Not published 1 person · Up to 5 devices simultaneously · 1 TB cloud storage microsoft.com · 20 Sept 2026
Microsoft 365 Family Not published 1 to 6 people · Up to 5 devices per person · Up to 6 TB cloud storage microsoft.com · 20 Sept 2026
Microsoft 365 Family Not published 1 to 6 people · Up to 5 devices per person · Up to 6 TB cloud storage microsoft.com · 20 Sept 2026

Compared on antivirus software

Free plan
Yes
Protection scope
antivirus
Supported platforms
Windows 10, Windows 11
Ransomware protection
Yes
Parental controls
No
Password manager
No

Best Microsoft Defender Antivirus alternatives

See all 12
Bitdefender Total Security Free trial AndroidiOSMacWin $5/mo8.2 Avast One AndroidiOSMacWin 8.0 Bitdefender Antivirus Plus Free trial AndroidiOSMacWin $2.08/mo8.0 Malwarebytes Premium AndroidextensioniOSMacWin 8.0 AVG Internet Security AndroidiOSMacWin $8.33/mo7.6 Avast Free Antivirus Free plan AndroidiOSMacWin Free7.6