Download the latest free virus definition files and update Defender antivirus

Windows Defender Definitions (32-bit)
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- The file will be downloaded from author's server
- This file is safe and scanned with 70 antivirus apps
- All files are in original form. FileHorse does not repack or modify downloads in any way
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About Windows Defender Definitions (32-bit)
Windows Defender Definitions, also known as Microsoft Defender Antivirus Definitions, are regularly updated files that contain information about known malware, viruses, spyware, and other malicious software.These definitions serve as a key component of Windows Defender, the built-in antivirus and antimalware solution provided by Microsoft.The purpose of Windows Defender Definitions is to keep the antivirus software up to date with the latest threats. As new malware and malicious activities emerge, Microsoft continuously analyzes and identifies them, creating specific definitions to detect and remove these threats from infected systems.It includes signatures, behavioral patterns, heuristics, and other indicators that help Windows Defender id... Read More »
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