Get the VM stateGet-VMSnapshot -VMName vmWithCheckpoint -ComputerName hyper-vhost | fl
Deleting the HyperV Backup Checkpoint
Removing a checkpoint merges its content with the parent. Merging may be disk intensive. If the differencing disk is large, you may want to do this after hours.
Removing the HyperV Replica Checkpoint
Sometimes a failed over VM had stale checkpoints which resisted the Remove-VMSnapshot command. In this case, the GUI was used to remove the checkpoint via Remove Replication
Forcing Removal of a SnapshotLocate the snapshot_guid.xml file. Stop and disable the VMMS service prior to editing. Restart the service after editing.
At the bottom of the <snapshots> section change:
a standard snapshot.
Need to edit when elevated and .