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Windows Defender Definition Updates July 31, 2025

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Windows Defender Definition Updates by Microsoft is an essential tool for maintaining robust security on your Windows devices. These updates ensure that Windows Defender, the built-in antivirus solution, is equipped with the latest threat definitions to ... and other cyber threats. Seamlessly integrated and automatically updated, it provides continuous protection, keeping your system safe and secure without interrupting your workflow. ...

Author Microsoft
License Freeware
Price FREE
Released 2025-07-31
Downloads 299
Filesize 195.00 MB
Requirements
Installation
Keywords Virus Definitions, Windows Defender, Definition Updates, Defender, Definition, Virus, Update
Users' rating
(28 rating)
Windows Defender Definition UpdatesOtherWindows 11, Windows 10 32/64 bit, Windows 8 32/64 bit, Windows 7 32/64 bit, Windows Vista
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