I don't think Virtualbox has a UEFI option, so I think virtualbox is (rightly) booting legacy. But still it can't boot from that ISO I just tried VMWare Player I notice that one can choose UEFI or not ...

It is the first thing you need to fix the issue as stated above. For that, you need to run the virtual machine showing the error and go to the Devices > Install Guest ...

If you’re facing this issue, you can try our recommended solutions below, which are listed in no particular order, and see if they help to resolve the issue on your Windows 11/10 computer. Install the ...