Hi I've been trying to find a way to perform an in-place upgrade of Win10 from Home to Pro version, with retaining files apps and settings. I know this can be done via Store for 99 USD, but I already have a key (and could also use a KMS solution). Are keys region locked? Changing the product key in Settings -> activation won't work, it won't accept generic Pro key. Upgrading from a DVD (with EI.cfg) won't retain apps, complains about it being a different version of Windows, so it can only retain files, not apps. Yet upgrading via Store should be able to retain the apps? I also tried changing the EditionID in registry to Professional, but DVD install still says that it's a different version of Windows. Windows Toolkit cannot install Pro key. Any help?