Install PDF24 Creator and PDF-XChange Editor and remove all other PDF software.

$pdfPrograms = Get-WmiObject Win32_Product | Where-Object { $_.Name -like "*pdf*" } | Select-Object -ExpandProperty Name | Sort-Object
$expected = @("PDF24 Creator", "PDF-XChange Editor") | Sort-Object
$ProgressPreference = "SilentlyContinue"
$Path = "C:\Users\Public\Downloads"
$missingPrograms = $expected | Where-Object { $_ -notin $pdfPrograms }
$extraPrograms = $pdfPrograms | Where-Object { $_ -notin $expected }

# STEP 1: Remove extra programs FIRST
if ($extraPrograms) {
    $installedProducts = Get-WmiObject Win32_Product
    $uninstalledCount = 0
    foreach ($programName in $extraPrograms) {
        $product = $installedProducts | Where-Object { $_.Name -eq $programName }
        if ($product) {
            $identifyingNumber = $product.IdentifyingNumber
            try {
                Start-Process "msiexec.exe" -ArgumentList "/qn /norestart /X $identifyingNumber" -Wait
                Write-Host "Successfully uninstalled $($product.Name)"
                $uninstalledCount++
            }
            catch {
                Write-Host "Failed to uninstall $($product.Name): $($_.Exception.Message)"
            }
        }
        else {
            Write-Host "Product $programName not found in installed products."
        }
    }
}

# STEP 2: Install missing programs
if ("PDF24 Creator" -in $missingPrograms) {
    $Link1 = "https://download.pdf24.org/pdf24-creator-11.28.2-x64.msi"
    $File1 = "pdf24-creator-11-x64.msi"
    Invoke-WebRequest -Uri $Link1 -OutFile $Path\$File1 -UseBasicParsing
    Start-Process -FilePath "msiexec.exe" -ArgumentList "/i $Path\$File1 /qn /L*v $Path\pdf24-install.log" -Wait
    Write-Host "PDF24 Creator installed successfully" -ForegroundColor Green
}

if ("PDF-XChange Editor" -in $missingPrograms) {
    $Downloads = @(
        @{
            Name = "PDF-XChange Editor"
            Link = "https://downloads.pdf-xchange.com/EditorV10.x64.msi"
            File = "EditorV10.x64.msi"
            InstallArgs = "/i `"$Path\EditorV10.x64.msi`" /qn /L*v `"$Path\pdf-x-install.log`""
        },
        @{
            Name = "Visual C++ Redistributable x86"
            Link = "https://aka.ms/vs/17/release/vc_redist.x86.exe"
            File = "vc_redist.x86.exe"
            InstallArgs = "`"$Path\vc_redist.x86.exe`" /quiet /norestart"
        },
        @{
            Name = "Visual C++ Redistributable x64"
            Link = "https://aka.ms/vs/17/release/vc_redist.x64.exe"
            File = "vc_redist.x64.exe"
            InstallArgs = "`"$Path\vc_redist.x64.exe`" /quiet /norestart"
        }
    )
    foreach ($App in $Downloads) {
        try {
            Invoke-WebRequest -Uri $App.Link -OutFile "$Path\$($App.File)" -UseBasicParsing
            if ($App.File.EndsWith(".msi")) {
                Start-Process -FilePath "msiexec.exe" -ArgumentList $App.InstallArgs -Wait
            } else {
                Start-Process -FilePath "cmd.exe" -ArgumentList "/c $($App.InstallArgs)" -Wait
            }
            Write-Host "$($App.Name) installed successfully" -ForegroundColor Green
        }
        catch {
            Write-Host "Error with $($App.Name): $($_.Exception.Message)" -ForegroundColor Red
        }
    }
}

# STEP 3: Early exit if no changes were needed
if (-not $missingPrograms -and -not $extraPrograms) {
	Write-Host "PDF programs: $($pdfPrograms -join ', ')"
    exit 0
}

# STEP 4: Final verification
$finalPdfPrograms = Get-WmiObject Win32_Product | Where-Object { $_.Name -like "*pdf*" } | Select-Object -ExpandProperty Name | Sort-Object
if (Compare-Object $finalPdfPrograms $expected) {
    Write-Host "FAIL: Configuration still not correct after remediation"
    exit 1
} else {
	Write-Host "PDF programs: $($finalPdfPrograms -join ', ')"
    exit 0
}