The Performance Options window will open.Press the Windows key + R keyboard shortcut, then type SystemPropertiesPerformance in the Run box and press Enter.Method 2: Disable or Enable Thumbnail Previews via Performance Options Click on the View tab and check the option “ Always show icons, never thumbnails” to disable thumbnail previews, or uncheck it to enable thumbnail previews.
Go to the View tab and click the Options button in the Ribbon menu. Method 1: Disable or Enable Thumbnail Previews via Folder Options In this tutorial we’ll show you 4 ways to turn off or on thumbnail previews in File Explorer on Windows 10 / 8 / 7. Is there any way to disable video and image thumbnail preview in Windows 10? Thumbnail previews are useful since they let you preview Windows files without opening them, but it might slow down folder navigation process.