Isscript Msi !!top!! -

Open the MSI → CustomAction table → Filter Type column for 1 (DLL) and Target containing ISScript .

$msi = "C:\path\to\setup.msi" $rows = @(Get-WmiObject -Class Win32_Product | Where-Object $_.Name -like "*InstallScript*") # Not reliable msidb -d $msi -t CustomAction | findstr /i "script" isscript msi