I have a few MSI installers that I'm trying to batch to run silently, and the silent switch aren't working in both Windows 7 RC and RTM 64-bit. I'm trying 7-Zip 64-bit. This shows nothing, but does nothing either. @ECHO OFF msiexec /i 7z465-x64.msi /qn This shows the installer progress, but is fully unattended. @ECHO OFF msiexec /i 7z465-x64.msi /qr This happens with almost all of the MSIs I've tried it on. Am I alone here?