Greetings, as you all know the default settings (registry) of a user profile is stored at "C:\Users\Default\NTUSER.DAT", everytime a new user log in, Windows will duplicate this registry setting and assign it to the new user right? Now for example, I want Windows to use dark theme by default for every users, of course including the one I create during oobe phase. So in host OS, I go to regedit and select HKEY_USERS, load hive, choose the "\Users\Default\NTUSER.DAT" inside the install.wim of my desire mounted ISO, create a name "TEMP" for the registry key, go to "HKEY_USERS\TEMP\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize", change the value of DWORD "AppsUseLightTheme" to 0, select "TEMP" again and unload hive. After that I tested it in VM, but neither the profile I created during oobe phase, nor the user profile I created after oobe phase, use dark theme right after log in, and the "AppsUseLightTheme" is still 1 when I view that in HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize. I wonder why the settings don't apply to new profiles created?