Home > MED-V, Uncategorized, Virtualization, VPC, Win7 > Running a MED-V application that depends on presence may not properly show presence when hovering over it in the System Tray

Running a MED-V application that depends on presence may not properly show presence when hovering over it in the System Tray


Let’s review some basic information about how MED-V: The way MED-V V2 works is the Windows 7 host machine connects to the Guest Virtual PC through an RDP-style connection. This basically turns the Windows XP Virtual PC into a mini-RDP server. This must always be in the back of your mind while you test your applications under a MED-V solution. Leveraging RDP removes the need for a hooking DLL to be injected into the guest OS and cuts down on the overhead of the MED-V Guest Agent.

Since applications that run under MED-V are basically the same to the Windows 7 host as applications running remotely on an RDS or Terminal server, you will encounter specific limitations in cosmetic desktop features. For example, the AeroPeek style thumbnail preview of the remote application will not be visible. Window titles will show an appended (Remote) to differentiate it from the local applications.

In addition to what comes through the remote connections, MED-V will republish (pass along) critical messages that appear in the Windows XP system tray. For example, password expiry notices and update notices from WSUS (or Configuration Manager) will also appear on the local desktop. Applications that publish to the Windows XP System tray in the guest will also appear in the host (with an appended “Remote.”)

One item that is not simply a cosmetic issue that you will need to be aware of when considering MED-V for application remediation are applications that have presence indicators in the system tray. Changes in presence often cause a change in icon or icon color as well as their pop-out status message. While these status icons will appear in the Host system tray, there will be potential issues with changes in user presence updating icons properly.  Applications such as Communicator, Windows Messenger, and Lotus SameTime may not always update/change presence notifications properly when running in a MED-V workspace.

Let’s use the example of a user being signed in initially as “available.” When the use steps away and becomes idle, the system tray icon may not initially reset the icon appearing in the host to “Away” even though the user is away from their desk.

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