I want to be able to customize almost all settings during installation (not in the winnt.sif file), except for some obvious settings like accept eula, product key and remove some components. But with the settings in my current winnt.sif file, regional and network settings are skipped during setup. I did choose UnattendMode=DefaultHide, because I wanted to hide the productkey during installation. I'll try ProvideDefault, but I don't expect different results. I already have read those documents. Maybe I'm interpreting them incorrect? Or something else is wrong?