Most of these solutions work by directly forwarding the GPU-rendered image. On Linux, Moonshine uses Wayland for headless rendering, but that approach doesn't work on Windows.

Windows requires an active user session with a connected display(physical or virtual) in order to build a desktop to render something. RDP can create a backgorund session, but on non-Server editions of Windows, you can't have a background RDP session while you are using it. It only allows one active session unless you patched the RDP service.

I don't think that's entirely true with the recent Apollo and Vibepollo developments.