This is the solution that should be done first before any other solution. Just remove the lingerging backup checkpoint like you would a normal one via PowerShell (attention: check that you have a minimum of free space for the merge to be done without problems):

<code powershell>
Get-VMSnapshot -VMName "VMWithLingeringBackupCheckpoint" | Remove-VMSnapshot
</code>

<WRAP center round important 60%>
Just for the record: This command deletes all checkpoints
</WRAP>

===== Get snapshot count for each VM =====

To count the number of snapshots/checkpoints for each VM in a Hyper-V host, you can use PowerShell. Here’s a refined version of your script that will do just that:

<code powershell>
$vms = Get-VM
foreach ($vm in $vms) {
    $snapshotCount = (Get-VMSnapshot -VMName $vm.Name).Count
    Write-Output "$($vm.Name): $snapshotCount"
}
</code>

Explanation:
  * Get-VM retrieves all VMs on the host.
  * For each VM, ''Get-VMSnapshot'' fetches the snapshots, and ''.Count'' gives the number of snapshots.
  * Finally, it outputs the VM name along with its snapshot count.