#mouse #logitech #windows10 How to get a bluetooth mouse to work again after a windows update kills it. 1) turn BT mouse over and select channel 3 on the bottom 2) go to settings and devices 3) find bluetooth devices 4) click add device (+) and see if windows 10 21h2 April Patch Update applied now shows logitech MX Master 3 in the list 5) If comes up click Pair and it should connect and work again if a problem also check no other BT device in room transmitting like an Android Box just in case its clashing same radio waves. also try channel 2.