For some security reason you may need to log a user out. After deactivated a profile you should logout this user to be sure he will not be able to access the system anymore.
If a user is assigned credentials to do so, they can log any user out of the system at any time. This will log the user out of the app and web and they will have to log in again if they want to continue to use the system. To do this:
Go to Settings
Select User Settings
On the user overview, click Logout
To logout all users, click Logout All Users at the top of the list