When running the command-line silent install of HP Image Assistant, the camera software fails to silently install. It runs the installer in normal mode and prompts for user interaction, causing the rest of the silent installs to wait for the user to interact with the dialog box.
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The command to start the silent install: HPImageAssistant.exe /Operation:Analyze /Catagory:All /Selection:All /Action:Install /SoftpaqDownloadFolder:C: HPIA /Silent I've recorded this happening on a ZBook 15 G4 (happens on 840 G2, G3, G4 as well): I noticed the sp79651 HP Universal Camera Driver folder included a install. Driver Canon Mx377. cmd that had the following code: @echo off rem Switch to batch file directory pushd%~dp0 pushd bin 'HPUCDSilent. Download Oem Windows 7 Hp Driver. exe' popd:done popd exit /b%ERRORLEVEL% So I ran HPUCDSilent.exe and sure enough, it didn't silently install. So I grabbed the same SoftPaq from hp.com, ran HPUCDSilent.exe and it installed silently!