How to fix VirtualBox "Failed to open a session for the virtual machine" error (IMAGE_READ_ONLY) - YouTube
There was an error while executing `VBoxManage`, a CLI used by Vagrant for controlling VirtualBox. · Issue #9318 · hashicorp/vagrant · GitHub
E_FAIL - Failed to Open Disk Image VirtualBox - YouTube
virtualbox - Deleted VM snapshots in file manager and broke my VM - Super User
FIX: VirtualBox Failed to open Hard Disk file. Cannot register virtual hard disk because a disk with the same UUID already exists.(Solved) - wintips.org - Windows Tips & How-tos
Vagrant up fails with VERR_PATH_NOT_FOUND · Issue #8275 · hashicorp/vagrant · GitHub
How to Fix 0x80004005 Error in VirtualBox. VM Session was closed before any attempt to power it on - YouTube