Oracle virtual box inaccessible

This normally happens if the host OS crashes or you pull the plug on it, leaving the .vbox file unsaved. In the location: you should find two files: vBoxxxxXubuntu_Beta.vbox-prev vBoxxxxXubuntu_Beta.vbox-tmp Copy vBoxxxxXubuntu_Beta.vbox-prev to vBoxxxxXubuntu_Beta.vbox. Select vBoxxxxXubuntu_Beta.vbox, in the VBox manager, right click, and then left click on refresh. Observe that it now shows Powered Off. … Read more

VirtualBox won’t run win10: Failed to open a session for the virtual machine w10. Result Code: NS_ERROR_FAILURE (0x80004005)

VirtualBox Version: 6.1.22 r144080 (Qt5.6.3) Host Operating System: MacOS BigSur I came across exactly same issue, where clicking on add to choose image was crashing the dialog. This issue persists in the latest version of Virtual Box for Mac. I could figure out couple of ways to avoid clicking on Add button to choose image. … Read more