If the parameter is missing, create it with the specified value. The NumThumbnails parameter type must be DWORD.Īfter completing these steps, you need to restart the computer. On the right, find the NumThumbnails parameter and change its value to 10 in hexadecimal or 16 in decimal. If the parameter is missing, skip this step and go to the key: HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Taskband On the right, look for the DWORD parameter DisablePreviewDesktop and delete it. Open the registry editor with the regedit command and expand it to this branch: Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced Change Registry settings to show taskbar thumbnails However, if it doesn’t help, that could mean that Windows 10 doesn’t show taskbar thumbnails due to settings in the registry. In order not to bother too much, select “Adjust for best performance”, apply it, and then select& apply the default mode again, “Let’s Windows choose what is best for my computer”.Click on the Settings button under Performance on the Advanced tab.Press the Win+R shortcut keys and type systempropertiesperformance in Run.
Check if taskbar thumbnail previews enabled If you haven’t seen the thumbnail previews from very beginning, it’s worth checking if you have them enabled. Windows 10 doesn’t show taskbar thumbnails Change Registry settings to show taskbar thumbnails.Check if taskbar thumbnail previews enabled.Windows 10 doesn’t show taskbar thumbnails.
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