| Microsoft Security Essentials Definition Updates x32 | Windows Defender Definition Updates | Zillya! Antivirus Definition Updates | Microsoft Defender Update for Windows Operating System Installation Images | |
| July 15, 2024 | July 31, 2025 | 2.0.0.5410 | 1.429.122.0 | |
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| Freeware | Freeware | Freeware | Freeware | Licence |
| FREE | FREE | FREE | FREE | Price |
| 141.00 MB | 195.00 MB | 415.00 MB | 194.00 MB | File size |
| Jul 15, 2024 | Jul 31, 2025 | Jul 24, 2025 | May 26, 2025 | Update |
| 65 | 83 | 34 | 34 | 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 10 32/64 bit, Windows 8 32/64 bit, Windows 7 32/64 bit, Windows Vista, Windows XP | Windows 11, Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows 10 32/64 bit | OS |
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