Follow the steps given below to disable the Thumbnail Previews:
1. Click on start and type on search bar
gpedit.msc and press enter
2. Now navigate to
User Configuration,
Administrative Templates, and
Start Menu and Taskbar in left pan of Group Policy Editor
3. Locate “
Turn off Taskbar Thumbnails” in right pan of Group policy editor and double click on it.
4. Select
Disable, click
Apply and Press
ok
5. Now check your Taskbar, it shouldn’t show Thumbnails Preview .
In order to Enable the Taskbar Thumbnail Previews again, select
Enable in step 4.
Please Note: Taskbar Thumbnail Preview only works when you have Enabled Aero in Windows 7.
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