The NetScaler Gateway plug-in Icon is integrated with Receiver for Windows. This means the Gateway Plug-in is not visible on the taskbar when running a full VPN session.
This creates confusions for a typical user with limited knowledge due there is no “Log Off” action to hit, instead you need to right click on the receiver, hit “about”, “Advanced”, “Gateway”… It is simply not easy for everyone to find.

Method 1:

To show the NetScaler Gateway plug-in icon, edit or create the following registry values:

Run: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Secure Access Client
Name: DisableIconHide
Data: 1

Now, restart your client or the NetScaler Gateway plug-in to enable this Change and you’ll notice that both receiver and the gateway plug-in will show on the taskbar…

Method 2:

The cleanest way to do this is to upgrade your Netscaler firmware to version 11 (not released yet, tho), and make use of the new added session profile parameter “Show VPN Plugin Icon with receiver