Does anyone know how to disable the user from changing the system's date and time. I know it can be done via policy, but I can't use that in this situation. My program applies different rights to the system in real-time when the user logs into my program (but all the while only 1 user is logging in to Windows). I can control almost everything about the system, but this one user right is giving me trouble. I know how to refresh the policy once the registry has been changed, but I can't figure out which registry entries to change and to what. Any help would be appreciated. Thanks.