In the menu, turn off (uncheck) the Show Task View button command to hide both the button. Hide the Task View button from the Taskbar Task View replaces and extends the Alt+Tab dialog.
Also, it has integration with Timeline in recent versions of the OS.
It allows creating new virtual desktops, re-arranging windows between them, and removing virtual desktops. When you click it, it opens a special pane which combines windows you’ve opened on every virtual desktop.
To manage virtual desktops, Windows 10 offers the Task View feature.
For users of Mac OS X or Linux, this feature is not spectacular or exciting, but for Windows users it is a step forward. Windows 10 comes with a brand new feature – virtual desktops. To restore the search box, enable the Show search box option. Select Cortana > Show Cortana icon to have a circle Cortana icon instead of the search box. In the menu, select Cortana > Hidden to hide both the search box and icon. Right-click on the empty space on taskbar to open the menu. Hide Search from the Taskbar in Windows 10
Let's look at how to create new desktops and work with them.
In this example, we already have five virtual desktops, but you start with only one. Below that, you will see icons representing each of your desktops. In the Task View, you will see an overview of the application windows you have open on your current desktop. If this icon is missing on your Taskbar, right-click an empty portion of the Taskbar and select Show Task View button.