That’s what the “LastActiveClick” setting does. When you click the button, you see thumbnails of your open windows and you can click the one you want.īut what if you could simply click an application’s taskbar button to open the last window you actively used? What if you could keep clicking the button to cycle through your open windows? You could switch between windows much more quickly. Like Windows 7 before it, Windows 10 combines multiple windows from running applications into a single button on your taskbar. Switch Windows With a Single Click on the Taskbar