Windows 10 Enterprise x64. Hyper-V VM on Local
In Hyper-V Manager, when selecting Apply on a Checkpoint, then pressing Cancel
It decides to Apply the Checkpoint anyway. So both the Apply and Cancel perform the same action.
https://winpeguy.wordpress.com/2015/10/30/win10-bug-hyper-v-cancel-apply-checkpoint-doesnt-cancel/
David Segura david@segura.org