I tried looking into this myself but I couldn’t really find much about this error. The only solutions I could find didn’t work for me. The first one was to use mokutil but at the point where I was supposed to run sudo mokutil -- it gives me the error message “Failed to get file status, MOK.der” even though I did everything it told me to do. The other one was to disable secure boot and then run sudo '/sbin/vboxconfig' but even though it looked like it worked, I’m still getting the error message. I have re-enabled secure boot, so you don’t have to worry about that.
Is there something else I can try or does VirtualBox not work in Linux Mint for some reason?
I’m currently installing virt-manager but I ran into a problem with Gnome Boxes where I’m trying to run a Windows XP virtual machine but I can’t figure out how to get files from my host to the guest. Apparently, I need some software to be running on the guest but the website that I need to download the software from doesn’t work in internet explorer and I obviously can’t just download it on the host and transfer it to the guest.
Yes this seems to be a Gnome Boxes Flatpak problem. I like that it works as a flatpak, but unsure if this can be fixed, I think its a known limitation.
Oh yes, the spice guest addition. This will be needed on every Spice VM
Try this bat script from Github
Or the program they are referring to