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Windows
First update Windows

Microsoft Update
Available packages

clamAV.msi - base package for clamav, an anti-virus utility for Windows

How to install

simple mode: doubleclick the MSI installer package
command line (displays only a confirmation dialog at the end): msiexec /i clamAV.msi /qr
Requirements

Microsoft .net version 2.0 is required starting with ClamAV 0.92.1