Click on the VM you would like to revert to an old (previous) state.
– Under the Checkpoint pane,
– Select the checkpoint you would like to restore (revert)
– Right-click on it and select Apply
Next, the apply dialog box appears,
– Click on apply.
When this is applied, this will turn off (shutdown) the VM.
– Click o start to start the VM and
-Click on connect to open a session (connection) to the VM
The VM will reboot and revert to the desired state you want it (have selected).