Windows 7 - force existing user session to logoff, not disconnect, at log on

Solution 1:

This might work, depending on your permissions:

1. Open Task Manager

2. Processes Tab, Show Processes from all users (it's on the bottom left)

3. Users Tab, select the user you want to kill processes on, Logoff

4. You'll see a prompt asking to confirm logging them off, choose logoff

I've just verified this between a regular user account and admin account on my network.

Here's a link with screenshots of how to do this, step by step.

Solution 2:

Create a group policy for those system(s) that sets a low timeout for logging off disconnected users.

To do so, check out the Computer Configuration > Policies > Administrative Templates > Windows Components > Terminal Services > Sessions section of group policy and enable Set time limit for disconnected sessions, and set a timeout (1 minute).

That was after being 'Disconnected' for a minute, they'll be logged off.