Why I can't open Main Application Windows

I was installed 3 times CAVS, But aways can’t open Main Application Windows.
Some body can tell me why
My system is window xp pro.
CAVS version is 2.0.15.51

Hi, welcome to the forum.

Are you unable to open the application from shortcuts, as well as the tray icon (double- or right click)? What other security software do you have?

/LA