Possible registry locations to find an installed program and get the product code from

product-code-registry-locations.md

• HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
• HKLM\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall
• HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall

search-registry-uninstall-key.ps1

function Search-RegistryUninstallKey {
param($SearchFor,[switch]$Wow6432Node)
$results = @()
$keys = Get-ChildItem HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall | 
    foreach {
        $obj = New-Object psobject
        Add-Member -InputObject $obj -MemberType NoteProperty -Name GUID -Value $_.pschildname
        Add-Member -InputObject $obj -MemberType NoteProperty -Name DisplayName -Value $_.GetValue("DisplayName")
        Add-Member -InputObject $obj -MemberType NoteProperty -Name DisplayVersion -Value $_.GetValue("DisplayVersion")
        if ($Wow6432Node)
        {Add-Member -InputObject $obj -MemberType NoteProperty -Name Wow6432Node? -Value "No"}
        $results += $obj
        }
 
if ($Wow6432Node) {
$keys = Get-ChildItem HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall | 
    foreach {
        $obj = New-Object psobject
        Add-Member -InputObject $obj -MemberType NoteProperty -Name GUID -Value $_.pschildname
        Add-Member -InputObject $obj -MemberType NoteProperty -Name DisplayName -Value $_.GetValue("DisplayName")
        Add-Member -InputObject $obj -MemberType NoteProperty -Name DisplayVersion -Value $_.GetValue("DisplayVersion")
        Add-Member -InputObject $obj -MemberType NoteProperty -Name Wow6432Node? -Value "Yes"
        $results += $obj
        }
    }
$results | sort DisplayName | where {$_.DisplayName -match $SearchFor}
}

Source: https://smsagent.blog/2015/10/15/searching-the-registry-uninstall-key-with-powershell/

Usage: Paste Search-RegistryUninstallKey in powershell and run

Search-RegistryUninstallkey -SearchFor "<keyword>" -Wow6432Node