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Fix Windows File Explorer PDF and Word Preview Disabled
Question details
Users are unable to preview PDF and Word documents in Windows File Explorer after installing a recent Windows security update.
- Product
- Windows File Explorer
- Device & OS
- Windows
- Scenario
- Attempting to quickly identify the contents of downloaded PDF or Word documents using the File Explorer preview pane.
- Observed behavior
- The File Explorer preview pane is disabled or fails to display previews for PDF and Word files downloaded from the internet or received from other computers.
Before modifying security settings or updates, open Windows File Explorer, click the View tab, and ensure that the 'Preview pane' option is actually enabled.
Unblock Individual Trusted Files
Safely restore the preview functionality for specific files you trust by manually unblocking them without compromising system-wide security.
Microsoft intentionally restricts previews for files downloaded from the internet to prevent malicious code execution. Unblocking a file tells Windows that you trust the source.
Locate the downloaded PDF or Word file in File Explorer and right-click on it to open the context menu.
Select 'Properties' from the drop-down menu to view the file details.
Navigate to the General tab, look for the Security section at the bottom, check the 'Unblock' box, and click Apply followed by OK.
Uninstall the Problematic Security Update
If you urgently need global previews for all downloaded files, you can roll back the Windows update, though this is not recommended due to security risks.
Use WPS Office for Fast and Secure Document Viewing
Since Windows restricts File Explorer previews for internet-downloaded files to prevent security risks, switching to a lightweight suite like WPS Office lets you open, view, and manage documents safely and quickly without relying on system preview panes.
- 1. Download WPS Office: Visit the official WPS website to download the free installation package for your Windows PC.
- 2. Set as Default Application: Configure WPS Office as your default program for opening Word documents and PDF files to ensure they open quickly.
- 3. Open and Manage Files Safely: Double-click your downloaded files to instantly view their contents in WPS Office's secure, tabbed viewing environment instead of relying on Explorer previews.
Frequently Asked Questions
Why did Microsoft disable the preview feature for downloaded files?
Microsoft intentionally disabled File Explorer previews for files downloaded from the internet as a proactive security measure. This helps prevent system credentials from being exposed and stops malicious scripts from running when you preview unknown files.
Is it safe to uninstall the Windows security update to restore file previews?
Uninstalling or rolling back a security update is generally not recommended. Doing so may expose your computer to the exact vulnerabilities that the update was designed to fix. It is safer to unblock trusted files individually.
Can I restore previews by changing my Internet security settings?
While modifying your Internet Options or lowering system security settings might restore the preview functionality globally, it is strongly discouraged as it significantly reduces your computer's protection against malicious files and internet threats.
How can I report this preview issue to Microsoft?
If you wish to provide feedback on how this security measure affects your workflow, you can use the built-in Windows Feedback Hub app on your PC to report the issue directly to Microsoft engineers.
