Other PDF Issues

Fix Missing Folder Thumbnails in Adobe Acrobat After Windows Update

Kushani NimanthikaKushani Nimanthika Nov 3, 2026 868 views

Question details

Folder thumbnails are no longer displaying in Adobe Acrobat DC following a Windows update.

How to Fix Missing Folder Thumbnails in Adobe Acrobat After a Windows Update
Product
Adobe Acrobat DC
Device & OS
Windows
Scenario
Browsing PDF files and folders within the Adobe Acrobat DC interface after installing a recent Windows update.
Observed behavior
Folder images or thumbnails have disappeared, making it difficult to visually identify folders without opening them.
Before you start

Ensure you have saved all open documents and temporarily disable any third-party file explorer customization tools before attempting to reset your thumbnail cache.

Solution 1Recommended

Clear Thumbnail Cache and Verify Explorer Settings

Resetting the Windows thumbnail cache often resolves issues where folder and file images fail to render properly in applications like Acrobat.

Windows updates can sometimes corrupt the temporary files used to display folder and file images. Forcing Windows to rebuild these files will typically restore the missing thumbnails inside Acrobat's browse dialogs.

1
Open File Explorer Options

Search for 'File Explorer Options' in the Windows Start menu and press Enter to open the properties window.

2
Verify View Settings

Navigate to the 'View' tab. Ensure that the option 'Always show icons, never thumbnails' is completely unchecked, then click 'Apply'.

3
Run Disk Cleanup

Press Windows Key + R, type 'cleanmgr' into the Run dialog, and press Enter. Select your primary system drive (usually C:) and click OK.

4
Clear Thumbnails

In the 'Files to delete' list, scroll down and check the box next to 'Thumbnails'. Click 'OK' and confirm the deletion.

Clear Thumbnail Cache and Verify Explorer Settings
System Restart Required: You will need to restart your computer after clearing the cache for the newly generated thumbnails to appear correctly in Acrobat.

Manage and View PDFs Seamlessly with WPS Office

If Adobe Acrobat continues to experience display bugs after Windows updates, try WPS Office. Its built-in PDF tool allows you to easily browse, open, and manage your PDF files using stable, native system integrations without thumbnail glitches.

  1. 1. Download WPS Office: Download and install WPS Office from the official website.
  2. 2. Access the PDF Tool: Open WPS Office and click on the 'PDF' tab directly from the home screen.
  3. 3. Browse Without Glitches: Use the 'Open' dialog to browse your folders; WPS utilizes stable native Windows components to display folder and file thumbnails correctly.
  4. 4. Set as Default: Set WPS Office as your default PDF viewer in Windows Settings to ensure a fast, glitch-free reading experience every time.
Built-in advanced PDF reader and editor for modifying documents instantlyStable integration with Windows File Explorer for reliable thumbnail and icon previewsHighly compatible with all standard PDF files and Microsoft Office formatsLightweight installation that doesn't bloat your system cache or slow down browsing
microsoft office alternative - wps office

Frequently Asked Questions

Why do folder thumbnails disappear after a Windows update?

Windows updates can sometimes reset default File Explorer settings or corrupt the system's thumbnail cache, causing applications like Adobe Acrobat to lose the ability to fetch and display folder preview images.

Will repairing Adobe Acrobat delete my PDF files?

No, using the 'Repair Installation' feature in Adobe Acrobat only scans and fixes the application's program files and registry keys. It does not touch, modify, or delete any of your personal PDF documents.

How do I force Windows to rebuild the thumbnail cache?

You can force Windows to rebuild the cache by running the built-in Disk Cleanup tool, specifically selecting the 'Thumbnails' option to delete them, and then restarting your computer so the system can generate fresh previews.

What should I do if clearing the thumbnail cache doesn't work?

If clearing the cache fails, check if the 'Always show icons, never thumbnails' option is enabled in Windows File Explorer Options. Disabling this setting usually restores thumbnail visibility across all installed apps.