Disable Peek feature in Windows 10
To disable Aero Peek feature in Windows 10, do the following: If you don’t like this feature or hardly ever use it, you can always disable it. You can also right-click on the Peek button and uncheck the Peek at Desktop option.
Disable the Windows Preview feature in Windows 7
To disable the Windows Preview feature in Windows 7, right-click on the taskbar and click open Properties. Under the Taskbar tab, you will see a checkbox to Use Desktop Preview. Un-checking it will disable this feature. Click Apply > OK. Incidentally, right-clicking on the Desktop Preview button will also present you with this option. Windows offers many new features. It will offer improved navigation, a new taskbar, and a streamlined UI so that common tasks done in Windows are done easier and more quickly. You will be able to share data with all your PCs and devices in your home network or at work.