Since using Proxmox seemed totally overkill for just using a virtualized Windows10, I reached out to Quemu & VirtManager. It has not been the easiest task in the world, almost two hours to understand the cryptic error messages and solve them. A novice at all this would have given up after the first few minutes.
Obviously, a novice would not try to virtualize an OS on a server to remotely access it, but there is still room for improvement.