View or disconnect client sessions

Use the Current Sessions dialog box to view or disconnect clients that are currently connected to your project runtime server.

Before you begin, your project must be running on Windows using the full AVEVA Edge software with an appropriate runtime license. The Current Sessions feature is not available in our other runtime editions. Also, you must have access to the computer that hosts the project runtime, either directly or through screen sharing. You cannot access the Current Sessions feature through Remote Management.

When a client connects to your project runtime server, a client session is initiated. Each session counts against the maximum number of clients allowed by your runtime license. A session ends only when the user either logs off from the project or closes the client program, so if the current number of client sessions approaches the maximum number of clients allowed, you might need to disconnect old or idle sessions in order to ensure that your project runtime server remains accessible.

Note: For Mobile Access only: due to technical differences between web browsers, the exact moment when the thin client is considered "closed" — and therefore the session ends — varies somewhat. In Chrome for Android, the session ends when the user goes to a new website but not when the user closes the browser tab. In Safari for iOS, it is the opposite: the session ends when the user closes the browser tab but not when the user goes to a new website.

Thin Client sessions are handled by the TCP/IP Server runtime task in your project. When the project is running and the task is started, a TCP/IP Server icon is displayed in the notification area of the Windows taskbar. You can use this icon to open the Current Sessions dialog box for the Thin Client sessions.

Mobile Access sessions are handled by the Mobile Access runtime task, and similar to the above, when the project is running and the task is started, a Mobile Access Task icon is displayed in the notification area of the Windows taskbar. You can use this icon to open the Current Sessions dialog box for the Mobile Access sessions.

For more information about the TCP/IP Server and Mobile Access runtime tasks, see Runtime Tasks.

Also, please note how the title bar shows the maximum number of clients allowed. That information is gotten from your runtime license settings. For more information, see License Settings.

Finally, the User Name column will show individual user names only if you enabled the security system in your project. If you did not, all users will be logged on and shown as "Guest". For more information, see Security System.

Note: The Mobile Access runtime task has a memory limit of 1.5 GB. If this limit reached during project run time — typically due to trying to run an extremely large project, but also sometimes due to managing a large number of client sessions — additional clients will not be allowed, regardless of the runtime license settings. When this happens, an alert message will be displayed to users who try to log on.

To view or disconnect thin client sessions:

1. In the notification area of the Windows taskbar, right-click either the TCP/IP Server icon or the Mobile Access Task icon, and then on the shortcut menu, click Current Sessions.

   You might need to expand the notification area to show hidden icons.

   The Current Sessions dialog box is displayed.

2. To refresh the list of sessions, click Refresh.

   In most cases, the list will automatically refresh itself as thin clients connect and disconnect, but you can also manually refresh it make sure you have the latest information.

3. To disconnect a specific session, select that session in the list, and then click Disconnect.

   The selected session is disconnected and the session's user is logged off. A new session is automatically initiated, as if the user restarted or reloaded the thin client, but it will expire after a specified period if no one logs on. For more information about session expiration, see Configure the web settings for Mobile Access.

4. When you are done, either close the window or click Close.