When trying to install OS in Hyper-V, it ignores boot order and goes to "Start PXE over IPv4" instantly

I'm trying to create a VM from an .iso file on my computer. In my boot order settings, the DVD Drive with as value the .iso is at the top. I've tried several different VM's (Ubuntu18.04, Windows 10 and Windows Server 2016) all of which give me the same problem where they don't boot from the .iso file. Pressing any key doesn't do anything.

I followed tutorials from both my lecturers and articles online when creating the VM's.

I am clueless as to what I'm doing wrong, so any help is appreciated

Black "Start PXE over IPv4 screen Error message when trying Windows 10 after the black "Start PXE over IPv4" screen Error message when trying Ubuntu after the black "Start PXE over IPv4" screen

Try disabling Secure boot in the "Security" section of the settings.

I had the same problem with a gen2 Linux vm (running in Hyper-V Manager 10.0.17763.1). Turning off "Enable Secure Boot" allowed booting from an .iso. I think in some other versions of Hyper-V Manager the setting is under "Firmware"

This occurred when I was trying to boot from a Win 10 ISO. After the "Press any key to Boot from DVD..." message displays, it jumps almost immediately to trying to boot from the network (PXE over IPv4). The solution for me was to select 'Reset' from the Hyper-V menu and then immediately start hitting a key before the message showed up.