If I want to open toolbox by click on icon in windows panel, the icon disappears and nothing to do. And it seems that when the toolbox doesn't work, it's not possible start the Fleet. I have two devices with Windows 10 Pro and the same problem on both. The only solution that work for me was installing a much older version of the toolbox. Why is it hapenning? By the way, I'm glad that at least I have PhpStrom running.