Jochen Kalmbach's WebLog

Services and Vista (Session 0 isolation)

Starting with Vista MS has isolated the “session 0” from all other sessions and this session is specially reserved for services to separate it from the current logged on user and user-interface.

Now many servies which require inteaction with the user are not working anymore (or not as expected). To write “correct” services you need to follow the guidlines from MS:
Services in Windows Vista
Impact of Session 0 Isolation on Services and Drivers in Windows Vista

Just a small note to all developers who still want to use the “intercative service detection” in vista (which will display a message box that a service want to say somehting): This feature will be removed from the next version of windows! In the next version, all services must handle Session 0 isolation properly!