How can i cancel operation by force

[CrazyJohn]

I encounted a problem when restoring snapshot, that is I can not cancel the IProgress because it was not cancelable. How can i terminate it by force?

[noteirak]

If IProgress::cancel() does not work, your only option is to kill the VBoxSVC process - doing so will also kill all your running VMs and might corrupt your snapshot/base file!

Please read the posting guideline of this section so we can help you further - your code might also be the issue.