PDF Opening Issues

How to Fix PDF Files Freezing When Opening or Printing

Steve K Oct 22, 2026 868 views

Question details

Users experience unexpected freezing or unresponsiveness when trying to open PDF files or send documents to print.

How to Fix PDF Files Freezing When Opening or Printing

Product: Adobe Reader / Adobe Acrobat
Device & OS: Windows 7
Scenario: Opening a standard PDF document or initiating a print job to an HP printer.
Observed behavior: The application freezes, locks up, or stops responding shortly after the PDF is opened or right after the print command is issued.

Before you start

Make sure to save any open documents and close background applications, as you may need to restart your PDF software and update system drivers.

Solution 1Recommended

Disable Protected Mode in Adobe Reader

Turning off the Protected Mode sandbox can quickly resolve freezing issues caused by security conflicts with older drivers.

Protected Mode is a security feature that opens files in a restricted environment. On older operating systems like Windows 7, this sandboxing can conflict with printer drivers, causing the application to freeze.

Open Preferences

Launch your Adobe Reader or Acrobat application, click on the 'Edit' menu at the top left, and select 'Preferences' from the dropdown.

Navigate to Security Settings

In the Preferences window, look at the left sidebar and click on 'Security (Enhanced)'.

Disable Protected Mode

Uncheck the box that says 'Enable Protected Mode at startup' and click 'OK' to save your changes.

Restart and Test

Close Adobe Reader completely and reopen it. Try opening your PDF or printing it again to see if the freeze is resolved.

Security Consideration: Disabling Protected Mode can make your computer more vulnerable to malicious PDFs. It is highly recommended to re-enable this setting after you finish testing or printing your document.

Solution 2

Update Application and Printer Drivers

Updating your software ensures that known bugs are patched and compatibility with connected hardware like HP printers is improved.

Fast PDF Alternative

Read and Print PDFs Smoothly with WPS Office

If your current PDF software continues to freeze, switch to WPS Office. It includes a built-in, lightweight PDF reader that processes large documents and handles print jobs seamlessly without locking up your system.

1. Download the Software: Visit the official WPS Office website to download and install the free software suite on your computer.
2. Open Your PDF: Launch WPS Office, select the 'PDF' tab, click 'Open', and browse your computer to select the problematic PDF file.
3. Print Smoothly: Click the 'Menu' icon in the top left, select 'Print', configure your printer settings, and hit 'Print' to bypass any freezing issues.

Lightweight architecture prevents freezing when opening large PDF filesBuilt-in robust print manager that works flawlessly with modern and legacy printersHigh compatibility with Microsoft Office formats (Word, Excel, PowerPoint) and standard PDFsCompletely free for standard viewing, editing, and printing tasks

microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF freeze only when I try to print to my HP printer?

This is often caused by a communication conflict between Adobe's Protected Mode and specific printer drivers, especially on Windows 7. Outdated print spooler drivers can also cause the application to hang when spooling the document.

What is Adobe Protected Mode?

Protected Mode is a security feature that forces PDFs to open in a restricted 'sandbox' environment. This prevents malicious scripts from harming your system, but it can occasionally block essential background processes like printing.

Can a corrupted PDF file cause the reader to freeze?

Yes. If a PDF file is partially downloaded, corrupted, or contains overly complex graphics and fonts, it can overwhelm the reader application and cause it to crash or freeze upon opening.

PDF Troubleshooting