I tried to install a new virtual machine with latest version of Windows 10 (2004), but during installation, I always encountered the 0x8007025D error message, randomly in different moment of the setup. It appears that this error is related to Hyper-V.
In my case, I solved this issue by deactivating Hyper-V on my computer but you should also check if your ISO file is not corrupted with a checksum first.
When Hyper-V is used, a green turtle is appearing at the bottom status bar, next to the mouse symbol.
To deactivate Hyper-V:
- Open a command prompt running it as administrator.
- Run the following command: bcdedit /set hypervisorlaunchtype off
- Then, turn off your computer, unplug it for a minute and reboot.
Normally, you should be able to start your Windows 10 installation in your virtual machine.