Theses are the steps to use Windows 10 on Raspberry Pi 4.
Download Windows ISO from one of these two websites:
https://uupdump.net
https://uup.rg-adguard.net
For example, we are going to use this one: https://uupdump.net and from this web, select the OS and options you want and download the ISO image.
3. You'll need to download the file.zip with the scripts, that will handle downloading and creating the Windows 10 ISO you selected.
4. Then, you have to execute the script: uup_download_windows.cmd with superuser privileges. This step may require a few extra minutes.
5. Once the 4 step is finished, you have to download this SW: Windows on R and select the storage drive and device type:
6. Insert the SD card on your Raspberry Pi 4 and follow the typical Windows 10 installation steps.