Move window to new desktop in Windows 10?
Solution 1:
Open Task View, either by clicking on the icon in your task bar or by pressing Win + Tab, then right click on the application/window you would like to move to another virtual desktop and make your selection from the Move to context menu.
Note that you will only see the applications open on the current desktop in task view, so either open Task View from the virtual desktop it is running on, or you can change the "focus" to a different virtual desktop by mousing over it's picture (but not clicking it) at the bottom of the screen.