Getting List of Installed Applications that Matches Add/Remove Programs List

Question

I'm working on an application that lists all of the installed programs on a customer's computer. I've been able to get a list based on registry keys, but it doesn't include things that were installed via the Microsoft Store. It looks like using PowerShell (based on the guidance on this page: https://mhelp.pro/how-to-uninstall-windows-apps/) I can get lists of installed applications, but what I'm getting there seems to include a lot of items that aren't in Add/Remove Programs, and I'm not sure how to reconcile the 2 sources (Add/Remove Programs and the lists of programs via PowerShell). Is there some better way I should be doing this, or is there a flag or criteria that I should be using to determine if a listed application is present in Add/Remove Programs?

Answer 1

Perhaps something like that did you mean ?

Refer to How to Create a List of Your Installed Programs on Windows

---

$outputFile = "$env:APPDATA\Installed_Applications.txt"
$OS_Architecture = $env:PROCESSOR_ARCHITECTURE
if($OS_Architecture -eq 'x86') 
{
    #write-host '32-bit'
    $key = "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*"
}
else
{
    #write-host '64-bit'
    $key = "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*"
}

Get-ItemProperty $Key |
        Select-Object DisplayName, DisplayVersion, Publisher, InstallDate |
            Format-Table –AutoSize |
                Out-File $outputFile -Encoding UTF8 -Force
                    Start-Process $outputFile

---

EDIT : 25/08/2020 @ 18:20

Here is a Self-elevate script to get everything with admin rights :

cls
# Self-elevate the script if required
if (-Not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] 'Administrator')) {
  if ([int](Get-CimInstance -Class Win32_OperatingSystem | Select-Object -ExpandProperty BuildNumber) -ge 6000) {
      #$CommandLine = "-File `"" + $MyInvocation.MyCommand.Path + "`" " + $MyInvocation.UnboundArguments
      $CommandLine = $MyInvocation.InvocationName
      Start-Process -FilePath PowerShell.exe -Verb Runas -ArgumentList $CommandLine
      Exit
     }
    }

$outputFile = "$env:APPDATA\Installed_Applications.txt"
$OS_Architecture = $env:PROCESSOR_ARCHITECTURE
if($OS_Architecture -eq 'x86') 
{
    #write-host '32-bit'
    $key = "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*"
}
else
{
    #write-host '64-bit'
    $key = "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*"
}

Get-ItemProperty $Key |
        Select-Object DisplayName, DisplayVersion, Publisher, InstallDate |
            Format-Table –AutoSize | Out-String -Width 300 |
                Out-File $outputFile -Encoding UTF8 -Force 
                    Get-AppxPackage -AllUsers |
                        Out-File -Append $outputFile -Encoding UTF8 -Force 
                            Start $outputFile

Answer 2

In powershell 5 but not powershell 7:

get-package