What is the correct way to run a Windows 10 *Education* virtual machine on Linux?

I installed Windows 10 Education (Win10E) in Gnome Boxes on elementary OS 6 (Odin). As far as I can tell, it installs fine, and I can use Win10E with my university account. However, if I restart my computer or Gnome Boxes, the Win10E login screen will not accept my password, and I cannot log back into Win10E. Win10E acts as though my password is wrong, but it is not. Gnome Boxes also offers the option to install Win10E with a local account. I can add a local account, which allows me to log back into Win10E. However, there is a warning in the lower-right corner of the screen that I am in “test mode”. It seems that test mode means that I have an unsigned driver. I found [this guidance](https://windowsloop.com/disable-test-mode-windows-10/) on how to remove the test-mode warning. However, I prefer to not blindly silence warnings if I can fix the underlying situation. What is the correct way to run a Windows 10 *Education* virtual machine on Linux? I am open to other virtual machines, and all I really need is full access to Office 365 (i.e., not the web version).