Windows Latest published a tutorial about installing Windows 10 on the Raspberry Pi 4.
How to install Windows 10 on Raspberry Pi 4
With Windows 10 coming to ARM platforms, such as Qualcomm Snapdragon and Samsung Exynos, we know that it’s possible to run Windows 10 with desktop apps on ARM devices, including Raspberry Pi 4. There are multiple ways to install and run Windows 10 on a Raspberry Pi.
How to install Windows 10 on Raspberry Pi 4