You can try re-installation of IObit Security 360 if it doesn't work or some unexpected mistakes happen.

1) Exit your current version. Check the icon in system tray, right-click it and choose "Exit".

2) Uninstall your program. And delete all program files and directories (Usual path: "C:\Program Files\IObit\ IObit Security 360").

3) Reboot your computer.

4) Download the latest version and install it. (See Installation)