The PDF Shell component in Acrobat DC and Acrobat Reader DC allows you to see the thumbnails of PDF documents in Windows explorer, on both 64-bit and 32-bit versions of Windows. By default, this feature is OFF. You can enable it using a specific setting available in the preferences.
Note:
For Acrobat XI and Reader XI, the thumbnails of PDFs are automatically shown in Windows Explorer on Windows 32-bit systems. However, the same is not supported on Windows 64-bit systems.
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In the Preferences dialog box, choose General in the Categories list, and then select the Enable PDF thumbnail previews in Windows Explorer check box.
Note:
If you don't see the Enable PDF thumbnail previews in Windows Explorer checkbox, update your Acrobat DC or Acrobat Reader DC to the latest version. To automatically update from the product, choose Help > Check for updates and then follow the steps in the Updater window to download and install the latest updates.
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