The Aero Snap feature which appeared in Windows 7, allows you to manage opened windows easily. It has a number of features, one of which, is the ability to maximize an open window vertically by double clicking on the window's top edge. This behavior exists in Windows 10 and Windows 8 as well. Windows allows turning off Aero Snap completely via Ease of Access Center but offers no fine tuning over it. Turning off Aero Snap disables drag-to-top to maximize, drag-from-maximize to restore, drag-to-side-edges to snap and this vertical maximize feature - it's an all or none switch. If you want to keep Aero Snap on but only disable vertical maximizing of windows, in this article we will see how it can be done.