While porting Windows 10 to the Raspberry Pi 3 has proven troublesome, the situation with its successor is much better. There is still little productive use for Microsoft's latest OS on the Raspberry Pi 4 yet, though.
https://www.notebookcheck.net/Tools-available-Windows-10-runs-on-the-Raspberry-Pi-4-huge-progress-made-with-the-Pi-3.453743.0.html