Using f.lux with multiple user accounts
I am using f.lux since 4.111 with Windows 7.
If using f.lux in installations with multiple user accounts f.lux must be installed under each user.
A standard user can not update the registry stored settings (HKEY_CURRENT_USER\Software\Michael Herf). I guess this is because it was necessary to install f.lux under enhanced rights. So settings are not stored for a standard user. That's also the reason why these update notification will pop up always after login of a standard user.