Functions/Get-InstalledPrograms.ps1
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Function Get-InstalledPrograms { <# .Synopsis Fetches the list of installed software on a system via the Windows Registry. .Description Returns a list of software installed on a system determined from installations that have registered themselves in the Windows Registry. This cmdlet will parse both the native key and the WOW64 key if it exists to ensure a complete list of software installs is returned. .Notes This cmdlet is particularly useful on Server Core installations where the Programs and Features Control Panel applet isn't available and no equivalent cmdlet functionality exists. #> $ErrorActionPreference = 'Stop' # Define the key registry paths we'll retrieve installs from $NativeRegPath = 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' $Wow6432RegPath = 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' # Get the list of installed programs including WOW64 if present $UninstKeys = Get-ItemProperty $NativeRegPath if (Test-Path $Wow6432RegPath -PathType Container) { $UninstKeys += Get-ItemProperty $Wow6432RegPath } # Parse all returned installs and add them to an array $InstProgs = @() foreach ($Prog in $UninstKeys) { # If the entry has no defined DisplayName ignore it as it's probably not useful if ($Prog.DisplayName -ne $null) { $ProgInfo = [PsCustomObject]@{ Name = $Prog.DisplayName Publisher = $Prog.Publisher InstalledOn = $Prog.InstallDate Size = $Prog.EstimatedSize Version = $Prog.DisplayVersion Location = $Prog.InstallLocation Uninstall = $Prog.UninstallString } $ProgInfo.PSTypeNames.Add('PSWinGlue.Programs') $InstProgs += $ProgInfo } } return $InstProgs } |