Uninstall a software "Webex" installed on one user

Question

Hello,

I am trying to uninstall a webex software throuw a ps script because I want to uninstall it from all workstations. but the issue is that this script is not detecting the software because it's installed on one user. the script is run from the RMM as admin:

$SoftwareName ="webex"
#param (    [string]$SoftwareName)

if (-not $SoftwareName) {
    Write-Host "Please provide the software name as a parameter. Example: .\UninstallSoftware.ps1 -SoftwareName 'Software Name'"
    exit
}

# Registry paths to search for installed software
$uninstallKeys = @(
    "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*",
    "HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*",
    "HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*"
)

$found = $false

foreach ($key in $uninstallKeys) {
    Write-Host "Working on Key: $key"
        # Check if the registry key exists before attempting to query
        if (Test-Path $key) {
    # Get the uninstall information
    $software = Get-ItemProperty $key | Where-Object { $_.DisplayName -like "*$SoftwareName*" }

    if ($software) {
        $found = $true
        $uninstallString = $software.UninstallString

        if ($uninstallString) {
            Write-Host "Uninstalling $($software.DisplayName)..."

            # Handle cases where the uninstall string is quoted or contains arguments
            if ($uninstallString -match '^"([^"]+)"\s*(.*)') {
                $exePath = $matches[1]
                $arguments = $matches[2]
            } else {
                # Split the command manually
                $parts = $uninstallString -split ' ', 2
                $exePath = $parts[0]
                $arguments = if ($parts.Count -gt 1) { $parts[1] } else { "" }
            }

            # Ensure the arguments include quiet and no restart options
            Write-Host "arguments : $arguments"
  # Check for silent/unattended mode arguments
  if ($arguments -notmatch "/s|/S|/quiet|/silent") {
    $arguments = " /quiet /norestart " + $arguments # Assuming /S or /silent for silent uninstallation
    #$arguments =  $arguments # With no /S or /silent for silent uninstallation
    #$arguments = "/S /quiet /norestart " + $arguments # Assuming /S or /silent for silent uninstallation

}

            # Check if the path exists
            if (-Not (Test-Path $exePath)) {
                Write-Host "Uninstaller not found: $exePath"
                return
            }

            Write-Host "Executing: `"$exePath`" $arguments"
            #Start-Process -FilePath $exePath -ArgumentList $arguments -Wait -NoNewWindow
            Start-Process -FilePath $exePath  -Wait -NoNewWindow

            Write-Host "$($software.DisplayName) has been uninstalled."
        } else {
            Write-Host "Uninstall string not found for $($software.DisplayName)."
        }
    }
}else {
    Write-Host "Registry path $key not found."
}
}

if (-not $found) {
    Write-Host "No software found matching the name '$SoftwareName'."
}