To view the thumbnails of the opened apps, click on the Task View button on the taskbar as shown below, it is located just on the right side of the Start button.
You can also use the keyboard shortcut Windows Key + Tab on the keyboard.
Two ways you can use Task View on Windows 10.
- Click the Task View button on the taskbar.
- Or press Windows Key + Tab for Task View.
If somehow the Task View button isn’t available or not visible on the taskbar, right-click on the taskbar and enable Show Task View Button in the popup menu.