Open registry editor and navigate to this regestry key: “HKEY_CLASSES_ROOT | AcroExch.Document. How to activate thumbnail preview for PDF files. After this feature enable on your computer, you can view the PDF file like view Image on your windows Explorer.įor comparison between thumbnail preview activate or not on windows explorer you view the following picture: I don’t know this tips work on windows Vista/ Windows 7 or not. But you can activate thumbnails preview in windows explorer by editing registry entry. After disabling thumbnail previews with group policy, it’s impossible to enable thumbnail previews using other methods above until you set this policy back to Not configured.By default PDF thumbnail preview on windows explorer is not active. You can see the changes by refreshing your folder in Windows Explorer. 
Select Enabled to turn off thumbnail previews, or select Not configured to turn on thumbnail previews. Double-click the “ Turn off the display of thumbnails and only display icons” policy on the right pane. Open Local Group Policy Editor and browse to: User Configuration -> Administrative Templates -> Windows Components -> File Explorer. Method 4: Disable or Enable Thumbnail Previews via Group Policy You only need to refresh your File Explorer to see the changes immediately. Change the value data to 1 to hide thumbnails or 0 to show thumbnails, and click OK. Note: If you dont see the Enable PDF thumbnail previews in Windows Explorer checkbox, update your Acrobat DC or Acrobat Reader DC to the latest version. On the right pane, double-click the DWORD value IconsOnly to modify. Open Registry Editor and navigate to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced. Method 3: Disable or Enable Thumbnail Previews via Registry Editor Uncheck or check the “ Show thumbnails instead of icons” option under the Visual Effects tab, and click OK. 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.
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