In Windows 10 however, the live thumbnail preview is activated by the ‘Peek’ feature. The two are somewhat related and in Windows 7, turning off Aero Peek could turn off the taskbar thumbnail previews too. This is not to be confused with Aero Peek that helps your get a peek of your desktop by hovering your mouse on the far right corner of the taskbar. This has been a handy feature that lets you view tasks easily and still get to your current task easily. By hovering on the thumbnail that pops up, you can be able to sneak a peek of what is running on task window without actually going to the task. The hover time is predefined, and the default is set to half a second. By hovering the mouse on a task on the taskbar, a thumbnail preview pops up and shows what is running on the selected application. As first seen in Windows 7, thumbnail previews let you have a peek on the tasks on your taskbar.