There may be times where you need or want a complete uninstall of PowerSyncPro Migration Agent.  The following script will achieve this for you.  You can use this script stand-alone, or incorporate it into your software deployment tools and also Intune as a Platform Script under Scripts and remediations.

It will:

Check for the presence of PowerSyncPro

• Stop the Service
• Find the correct UninstallString
• Uninstall PowerSyncPro Migration Agent
• Delete the associated ProgramData directory
• Delete the associated PowerSyncPro Registry Keys
• Write a txt Log in c:\ProgramData
• Write entries to the Windows Event Log

$RegPath = 'HKLM:\SOFTWARE\Declaration Software\'
$UninstallKeyPath = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall'
$ServiceName = 'PowerSyncPro Migration Agent'
$AppName = 'PowerSyncPro Migration Agent'
$AppDataPath = 'C:\ProgramData\Declaration Software\'
$LogFile = "C:\ProgramData\PowerSyncProCleanup.log"
$EventSource = "Intune PowerSyncPro Cleanup"

function Log-Message {
    param (
        [string]$Message,
        [string]$EventType = "Information"
    )

    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    $logEntry = "$timestamp - $Message"

    # Write to file
    Add-Content -Path $LogFile -Value $logEntry

    # Attempt to log to Windows Event Log
    try {
        if (-not [System.Diagnostics.EventLog]::SourceExists($EventSource)) {
            New-EventLog -LogName Application -Source $EventSource -ErrorAction SilentlyContinue
        }
        Write-EventLog -LogName Application -Source $EventSource -EntryType $EventType -EventId 1000 -Message $Message
    } catch {
        # If we can't write to event log (common in Intune SYSTEM context), just skip
    }
}

# Begin script
Log-Message "Starting PowerSyncPro cleanup..."

# Only proceed if the key exists
if (Test-Path $RegPath) {
    try {
        # Stop service if it exists
        $svc = Get-Service -Name $ServiceName -ErrorAction SilentlyContinue
        if ($svc) {
            Stop-Service -Name $ServiceName -Force -ErrorAction Stop
            Log-Message "Service '$ServiceName' stopped successfully."
        } else {
            Log-Message "Service '$ServiceName' not found." -EventType "Warning"
        }

        # Look for the uninstall string
        $UninstallKey = Get-ChildItem $UninstallKeyPath |
            Where-Object { $_.GetValue('DisplayName') -eq $AppName }

        if ($UninstallKey) {
            $UninstallString = $UninstallKey.GetValue('UninstallString')
            if ($UninstallString) {
                $cmd = "$UninstallString /norestart /quiet"
                Log-Message "Uninstalling: $cmd"
                Start-Process -FilePath "cmd.exe" -ArgumentList "/c $cmd" -Wait
                Log-Message "Uninstallation completed."
            } else {
                Log-Message "Uninstall string not found." -EventType "Warning"
            }
        } else {
            Log-Message "Uninstall key not found in registry." -EventType "Warning"
        }

        # Remove registry key
        Remove-Item -Path $RegPath -Recurse -Force -ErrorAction Stop
        Log-Message "Registry key '$RegPath' deleted."

        # Remove application data folder
        if (Test-Path $AppDataPath) {
            Remove-Item -Path $AppDataPath -Recurse -Force -ErrorAction Stop
            Log-Message "AppData folder '$AppDataPath' deleted."
        } else {
            Log-Message "AppData folder '$AppDataPath' not found." -EventType "Warning"
        }

        # Final check
        if (-not (Test-Path $RegPath)) {
            Log-Message "Cleanup successful. Exiting with code 0."
            exit 0
        } else {
            Log-Message "Registry key still exists. Cleanup incomplete." -EventType "Error"
            exit 1
        }

    } catch {
        Log-Message "An error occurred: $_" -EventType "Error"
        exit 1
    }
} else {
    Log-Message "Registry key not found. No action taken."
    exit 0
}