To disconnect NetExtender
Open Status > Connection page and then click Disconnect.
The NetExtender session disconnects after a few seconds.
When NetExtender is disconnected, the NetExtender window displays and gives you the option to either Reconnect or Close NetExtender, for settings, refer to the section Configuring Settings.
(or)
Right-click the NetExtender icon in the system tray to display the NetExtender icon menu, and click Exit Sonicwall NetExtender.