0x8007025D Windows Installation Error and VirtualBox

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:

  1. Open a command prompt running it as administrator.
  2. Run the following command: bcdedit /set hypervisorlaunchtype off
  3. 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.