Dkms Virtualbox -

If you have Secure Boot enabled in your BIOS/UEFI, the kernel will refuse to load self-compiled (unsigned) kernel modules, including those built by DKMS.

sudo pacman -S virtualbox virtualbox-host-modules-arch # OR if you prefer the DKMS approach (better for LTS kernels): sudo pacman -S virtualbox virtualbox-host-dkms dkms virtualbox