Fix PDF Preview Pane Not Working in Adobe Acrobat Pro 64-Bit
Question details
The user needs to restore PDF preview functionality in the Windows File Explorer preview pane after updating their software.

- Product
- Adobe Acrobat Pro
- Device & OS
- Windows
- Scenario
- The user has installed or switched to the 64-bit version of Adobe Acrobat Pro and wants to view PDF thumbnails directly in File Explorer without opening the files.
- Observed behavior
- The Windows preview pane stops displaying PDF previews and shows an error or blank space instead.
Before uninstalling Adobe Acrobat, make sure to close File Explorer and any open PDF documents to prevent file locks from interrupting the removal process.
Clean Reinstall Adobe Acrobat Pro
Completely remove the existing installation using the Adobe Acrobat Cleaner Tool and reinstall the latest 64-bit version to fix corrupted registry keys.
Upgrading to or installing the 64-bit version can sometimes leave conflicting 32-bit registry entries behind. A clean installation forces Windows to rebuild the preview handler associations correctly.
Navigate to Windows Settings > Apps > Installed apps. Locate Adobe Acrobat Pro in the list, click the menu icon, and select Uninstall.
Download the official Adobe Acrobat Cleaner Tool from Adobe's website. Run the tool to completely wipe leftover registry entries, preferences, and background files.
Reboot your Windows system to ensure all background processes are terminated and the registry changes take effect.
Download the latest 64-bit Adobe Acrobat Pro installer from the official Adobe Help Center. Install the application, open it, and go to Help > Check for Updates to ensure you are on the newest release.
Check Windows File Explorer and PDF Association Settings
Verify that the preview pane is enabled in Windows and that PDFs are correctly associated with your PDF reader.
View and Edit PDFs Seamlessly with WPS Office
If you are tired of dealing with missing preview handlers and heavy installations, WPS Office provides a fast, lightweight, and robust built-in PDF reader that perfectly integrates with Windows File Explorer.
- 1. Download and Install WPS Office: Get the free WPS Office suite from the official website and run the installer on your Windows PC.
- 2. Set as the Default PDF Handler: Right-click any PDF file, select 'Open with' > 'Choose another app', pick WPS Office, and check 'Always use this app' to update your default settings.
- 3. Preview and Manage Files: Open File Explorer to immediately see rich thumbnails and previews of your PDFs, or double-click to edit them directly in the WPS PDF workspace.

Frequently Asked Questions
Why did the preview pane stop working after upgrading to 64-bit Acrobat?
The transition to the 64-bit version can occasionally fail to update the Windows registry keys responsible for the PDF preview handler, breaking the communication between File Explorer and the PDF application.
Does running the Adobe Acrobat Cleaner tool delete my saved PDF files?
No. The Cleaner tool only removes system files, registry keys, and software preferences related to the Adobe application. Your personal PDF documents and data remain completely safe.
How do I turn on the Preview pane in Windows 11?
Open File Explorer, click the 'View' button on the top command bar, hover over 'Show', and click 'Preview pane' from the dropdown menu to toggle it on.
What should I do if PDF previews still don't appear after reinstalling?
Ensure that the 'Show preview handlers in preview pane' setting is enabled in your File Explorer Folder Options. If that fails, consider switching to a lightweight alternative like WPS PDF to restore Windows preview handler functionality.




