@nsm0220, after updating Virtual Box I had also experienced VMs not opening on two separate host accounts. After considering giving up, in Windows uninstaller, I chose the repair option rather than "uninstall". VMs are now opening normally, as before, on our Windows 8.1 system.
I hope this unexpected fix works works as surprisingly well for you as it did for us!
after updating Virtual Box I had also experienced VMs not opening on two separate host accounts. After considering giving up, in Windows uninstaller, I chose the repair option rather than "uninstall". VMs are now opening normally, as before, on our Windows 8.1 system.
I hope this unexpected fix works works as surprisingly well for you as it did for us!