PowerCLI enable CBT on VM's where CBT is disabled

enable_CBT_on_VMs_where_CBT_notEnabled.ps1

$vcenter="vcenter.domain.tld"

Import-Module -Global  VMware.VimAutomation.Core 
Disconnect-VIServer * -Confirm:$false -Force | Out-Null #Disconnect all previously connected vcenter servers

# new spec
$vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec
# enable ctk
$vmConfigSpec.changeTrackingEnabled = $true

clear
connect-viserver $vcenter
write-host

$targets = Get-VM | where {-not $_.ExtensionData.Snapshot} | Where-Object {$_.ExtensionData.Config.ChangeTrackingEnabled -eq $false} 
if ($targets) {
    ForEach ($target in $targets) {
        $vm = $target.Name
        $vmview=get-vm $target | Get-View
        write-host "enabling CBT for $vm"
        $vmview.reconfigVM($vmConfigSpec)
        $snap=New-Snapshot $vm -Name "Enable CBT"
        $snap | Remove-Snapshot -confirm:$false 
    }
} else { write-host "nothing to do." }

Disconnect-VIServer $vcenter -Confirm:$false -Force