I have an active Windows 10 key on my system with Windows 10 installed and I keep getting prompt on startup to upgrade to Windows 11.
I have ignored these upgrades since I am not sure if I decided to upgrade to Windows 11, will my Windows 10 key no longer work for Windows 10 installation and only work for Windows 11 installations going forward once I upgrade?
Best to assume Microsoft does not want you to go backwards and your key will be locked to w11