On Windows XP, if a user is connected to a XP client using Remote Desktop, a second user cannot log on -- regardless whether the RDP session is active or disconnected.
This has changed on PCs running Windows 7: If a user connects to a Windows 7 PC using RDP and disconnects the session later, a second user can log on using RDP while the first session is disconnected, resulting in two users being logged on simultaneously. Is there a way to configure the system in a way that it behaves like Windows XP, meaning that at any time only one user can be logged on?
I have disabled "Fast User Switching" and configured Remote Desktop via Group Policy to only allow one session ("Limit number of connections"), but that has not changed the behavior -- a second user can still log on using RDP if the first one has disconnected his / her session.