When a user logs on to a VM-hosted application, the user device links to the Virtual Desktop Agent on the desktop and establishes a session. When carrying out maintenance or to assist users, you can control sessions in a number of ways. You can:
Depending on the machine type, you can log off and disconnect sessions. If you log off a session, it closes and the desktop becomes available to other users unless it is allocated to a specific user. If you disconnect a session, the user's applications continue to run and the desktop remains allocated to that user. If the user reconnects, the same desktop is allocated.
You can send messages to users to inform them about desktop maintenance. For example, you may want to tell users to log off before critical maintenance is about to take place.