In order to close Returnil Virtual System, press the X option from the program interface. After that, go to System Tray, right-click on the program icon and select Remove Returnil Virtual System. If you are not sure that the program is closed press the Alt+Ctrl+Delete key combination and open the Task Manager. In the Processes tab, select rvsmon.exe and click End Process button. After that, you can uninstall the utility using Add or Remove Programs feature.