Clean tone input sound is always on

Hi Guys, i recently just gotten my UR242 and i have muted all channels or even didnt open my cubase AI 9 i can still hear my mic or guitar signal on my windows. may i know if there is anyway to mute the signal from windows? i am always hearing dual tone for my guitar when im in cubase.

need help.

ThankS!

Hi and welcome,

Direct Monitoring is probably enabled on your UR242.