Notes on Secure Control in Polling capture mode on Windows

The DSM Explorer › Control Panel › Configuration Folder › Configuration Policy › Default Computer Policy (or User-Defined Policy) Node › Remote Control Policy Group › Host Policy Group › Notes on Secure Control in Polling capture mode on Windows

Missing Application Windows

Some semi-transparent application windows, such as the Windows Vista Sidebar and the Microsoft Office Assistant, will not be visible in a Secure Control session when using Polling capture mode. However, the vast majority of applications will appear as normal.

Information Leakage

When Polling capture is enabled during a Secure Control session, the user of the host is presented with a "Remote Control Session In Progress" message, which obscures the view of the desktop. However, some elements of the screen may still present themselves to the user in certain circumstances:

The position and shape of the Mouse cursor, as controlled by the remote user, will remain visible on the user’s desktop.
Some “always on top” application windows, such as the Task Manager window, may appear on the user’s screen, above the “Remote Control Session In Progress” message for a fraction of a second after they are opened or selected. However, during this time, the user will have no control over the visible application.
After a Desktop switch occurs, such as if the user presses Ctrl-Alt-Del, or if the Windows Vista User Account Control Permission dialog appears, the windows on the desktop may become visible for a fraction of a second, before being hidden again behind the "Remote Control Session In Progress" message.

If you are concerned about this possible information leakage in Secure Control mode, we recommend you select the Driver video capture mode, as the default Auto video capture mode will fall back to Polling mode if the video driver is unavailable.

More information:

General Policy Group (Host)

Video Capture Policy Group