| Windows Defender Definition Updates | Microsoft Security Essentials Definition Updates x32 | BitDefender Virus Definitions | Avast Virus Definitions VPS | |
| March 27, 2025 | July 15, 2024 | March 7, 2025 | March 27, 2025 | |
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| Freeware | Freeware | Freeware | Freeware | Licence |
| FREE | FREE | FREE | FREE | Price |
| 178.00 MB | 141.00 MB | 282.00 MB | 228.00 MB | File size |
| Mar 27, 2025 | Jul 15, 2024 | Mar 7, 2025 | Mar 27, 2025 | Update |
| 33 | 44 | 15 | 47 | Downloads |
| Windows 11, Windows 10 32/64 bit, Windows 8 32/64 bit, Windows 7 32/64 bit, Windows Vista | Windows 11, Windows 10 32/64 bit, Windows 8 32/64 bit, Windows 7 32/64 bit, Windows Vista | Windows All | Windows All | OS |
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