Windows Server 2019, Change Product Key Does Nothing

Published: July 9, 2020, 3:58 p.m.

This might also work on Windows 10, I haven't tried it.
1. Open an elevated command prompt.
2. slmgr.vbs /upk
3. slmgr.vbs /cpky
4. slmgr.vbs /ipk PRODUCT KEY

OPTIONAL (do it if you have a problem, maybe do it even if you don't)
5. slmgr.vbs /ATO

Reboot

Enjoy!