[This is preliminary documentation and subject to change.]
Recommendation (Designed for Microsoft® Windows® Logo)
If an application finds that user settings or data are not present in the user's profile, the application should recover gracefully and regenerate the necessary settings based on the application defaults.
In a multiuser environment, an application can be installed on a computer without the opportunity for setup to initialize HKEY_CURRENT_USER (HKCU) for the specific user starting the application.