Templates/Application/Detection.ps1
|
# Define minimum required version $DisplayName = "<Enter DisplayName value from registry>" $Version = "###VERSION###" # Process each key in 64-bit Uninstall registry path and detect if application is installed, or if a newer version exists that should be superseeded $UninstallKeyPath = "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall" $UninstallKeys = Get-ChildItem -Path $UninstallKeyPath foreach ($UninstallKey in $UninstallKeys) { $CurrentUninstallKey = Get-ItemProperty -Path $UninstallKey.PSPath -ErrorAction "SilentlyContinue" if ($CurrentUninstallKey.DisplayName -like $DisplayName) { # An installed version of the application was detected, ensure the version info is equal to or greater than with what's specified as the minimum required version if ([System.Version]$CurrentUninstallKey.DisplayVersion -ge [System.Version]$Version) { return 0 } } } |