Suppose you have multiple windows open in Windows 11, and you hover over the window in the taskbar. In that case, you will see a preview window. This preview window is also called a “thumbnail”.
It is a window that displays a preview of the opened window. However, if you have multiple windows open, you will see a whole series of windows. This can add up to 16 opened preview thumbnails for an HD resolution (1920×1080).
Windows 11 automatically adjusts the number of preview windows to the screen’s resolution.
This article tells you how to reduce the number of preview windows to one. So in case you have opened multiple windows of the same app, you will not see two or more, but a list view of the opened windows.
Below you can see an example of the result. Then you know what you are going to modify. You can see that multiple open windows are displayed in a list view instead of a preview.
Disable thumbnail previews on Windows 11 taskbar
I recommend creating a Windows restore point first.
Open the Windows registry. Right-click on the Start button. In the menu, click on “Run”. In the “Run” window type: regedit.exe
Go to the key:
Then right-click on “Taskband” and click on New and then on “DWORD 32-bit value”. Name this value “NumThumbnails” and change the value data to “0” without quotes.
Now close the Windows registry and restart your computer.
I hope to have helped you with this guide Thank you for reading!
Also read: Enable folder thumbnails in Windows 11.