Automating Netsweeper Removal and Replacement with a Powerful PowerShell Script

# Run this script with Administrator privileges
if (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
    Start-Process powershell.exe "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" -Verb RunAs
    exit
}

try {
    # Check if the MSI file with the same version is already installed
    $existingProduct = Get-WmiObject -Class Win32_Product | Where-Object { $_.Name -match "Netsweeper Client Filter" -and $_.Version -match "10.50.53.53" }
    if ($null -ne $existingProduct) {
        Write-Host "Netsweeper version '10.50.53.53' is already installed. No further action performed."
        exit
    }
}
catch {
    Write-Error "Error checking for existing Netsweeper version: $_"
    exit
}

try {
    # Find and stop services associated with "netsweeper" or named "NSFX Service"
    $netsweeperServices = Get-Service | Where-Object { $_.Name -match 'netsweeper' -or $_.DisplayName -match 'netsweeper' -or $_.DisplayName -eq 'NSFX Service' }
    foreach ($service in $netsweeperServices) {
        Write-Host "Stopping and removing service $($service.DisplayName)..."
        $service | Stop-Service -ErrorAction Stop
        $service | Set-Service -StartupType Disabled -ErrorAction Stop
        $service | Remove-WmiObject -Class Win32_Service -ErrorAction Stop
    }
}
catch {
    Write-Error "Error stopping and removing services: $_"
    exit
}

try {
    # Find programs with "netsweeper" in their names or publishers
    $netsweeperPrograms = Get-WmiObject -Class Win32_Product | Where-Object { $_.Name -match 'netsweeper' -or $_.Vendor -match 'netsweeper' }
    foreach ($program in $netsweeperPrograms) {
        Write-Host "Uninstalling $($program.Name) silently..."
        $uninstallString = "/x $($program.IdentifyingNumber) /qn /norestart"
        Start-Process -FilePath 'msiexec.exe' -ArgumentList $uninstallString -Wait -NoNewWindow
    }
}
catch {
    Write-Error "Error uninstalling Netsweeper programs: $_"
    exit
}

try {
    # Remove files and folders associated with "netsweeper"
    $locations = @(
        "$env:ProgramFiles",
        "$env:ProgramFiles (x86)",
        "$env:ProgramData",
        "$env:LocalAppData",
        "$env:AppData"
    )

    foreach ($location in $locations) {
        Get-ChildItem -Path $location -Recurse -ErrorAction SilentlyContinue | Where-Object { $_.Name -match 'netsweeper' } | Remove-Item -Recurse -Force -ErrorAction SilentlyContinue
    }
}
catch {
    Write-Error "Error removing Netsweeper files and folders: $_"
    exit
}

try {
    # Specify the path to the MSI and MST files
    $msiFilePath = "Netsweeper Client Filter - 10.50.53.53 win64.msi"
    $mstFilePath = "EAT-NSW.mst"

    # Silently install the MSI file with the specified transform
    Write-Host "Installing '$msiFilePath' silently with transform '$mstFilePath'..."
    $installString = "/i `"$msiFilePath`" TRANSFORMS=`"$mstFilePath`" /qn /norestart"
    Start-Process -FilePath 'msiexec.exe' -ArgumentList $installString -Wait -NoNewWindow
}
catch {
    Write-Error "Error installing new Netsweeper Client Filter: $_"
    exit
}

Write-Host "Netsweeper programs, services, and related data have been removed. New MSI file has been installed with the specified transform."