HELP: "application exclusive control of sound" Win10

From the audio properties in Windows 10 (sound card Tascam US 144 mkII) i deselected the option for the exclusive control of the sound from the applications. But often when i use Cubase 8.5 (Win 10) i can’t listen anything else on my PC and even if i close Cubase the situation remain the same. It happens also if i use the internal audio card of my PC. Why? Anyone in the same situation now or in the past?

Thanks a lot.