Windows 7 – Registry Trick To Accelerate Taskbar Thumbnails Preview

Windows 7 users must be quite familiar with the taskbar thumbnail preview feature. This useful Windows 7 feature has ability to generate preview thumbnails of taskbar items whenever the user moves the mouse pointer over the application/program icon. However, it takes some time to show the preview after the mouse pointer is moved over an icon.

You may use a simple registry trick to accelerate the taskbar thumbnail preview in Windows 7. You just need to follow the below mentioned steps.

  • Click on the “Start” button to display the Start Menu and go to “Run”. Type in “regedit” and press “Enter” to open the Registry Editor.
  • Navigate to the below mentioned registry Key HKEY_CURRENT_USER\Control Panel\Mouse

  • Within the right window pane, locate “MouseHoverTime” and double-click on it. Alter its value data to “0” and click on the “OK” button so as to save the new value.

  • Exit the Registry Editor. Now, restart your system to make the changes effective.


Once you have made the above changes in the system registry, you may move your mouse pointer over any program icon on the taskbar to verify whether the thumbnail preview is generated faster then before.