Fix Adobe Acrobat Freezing When Highlighting PDFs on Windows 10
Question details
Users experience an issue where the application hangs or stops responding entirely when trying to highlight text in PDF documents, despite having updated software.

- Product
- Adobe Acrobat Pro 2017
- Device & OS
- Windows 10
- Scenario
- Highlighting text and adding annotations to PDF documents.
- Observed behavior
- The software freezes and becomes completely unresponsive during the highlighting process. Standard troubleshooting like reinstallation, repairs, and preference resets often fail to resolve the problem.
Before attempting these fixes, ensure you have saved your current work and close any other heavy applications running in the background to free up system memory.
Disable 2D Graphics Hardware Acceleration
Disabling hardware acceleration is the most effective way to prevent display rendering conflicts that cause the software to freeze when highlighting.
PDF editors use your computer's graphics hardware to render pages and annotations quickly. However, conflicts between older software versions like Acrobat Pro 2017 and modern Windows 10 display drivers can cause the application to hang during graphic-intensive tasks like highlighting.
Launch Adobe Acrobat, click on the 'Edit' menu at the top, and select 'Preferences' from the dropdown list.
In the left-hand category pane of the Preferences window, select 'Page Display'.
Under the 'Rendering' section, uncheck the box next to 'Use 2D graphics acceleration'.
Click 'OK' to save your changes, then completely close and restart Acrobat to see if the highlighting freeze is resolved.

Update Windows 10 Graphics Drivers
Updating your display adapter drivers ensures compatibility between your operating system and the PDF software's rendering engine.
Test with a Clean Windows User Profile
Creating a new user profile helps determine if the freezing issue is caused by corrupted user-specific settings or background conflicts.
Highlight PDFs Smoothly with WPS Office
If your current PDF editor continues to freeze and disrupt your workflow, switch to WPS Office. Its built-in PDF reader and editor are optimized for Windows 10, allowing you to highlight, annotate, and manage PDF documents swiftly without performance lags.
- 1. Install WPS Office: Download and install the free version of WPS Office on your Windows 10 computer.
- 2. Open Your PDF: Launch WPS Office, click on 'Open', and select the PDF document you want to read or annotate.
- 3. Highlight Text: Navigate to the 'Comment' tab on the top ribbon, click the 'Highlight' tool, and smoothly drag your cursor over the text you wish to mark.

Frequently Asked Questions
Why does my PDF editor freeze only when I try to highlight text?
Highlighting requires the software to actively re-render the graphics on the page. If there is a conflict between the application's rendering engine and your system's hardware acceleration or graphics drivers, this specific action can cause the program to hang.
Can the size of the PDF file cause freezing during annotation?
Yes, exceptionally large PDF files or poorly optimized scanned documents with complex OCR (Optical Character Recognition) layers require more system memory. Annotating these heavy files can overwhelm the software, leading to unresponsiveness.
Will running the application in compatibility mode help?
Sometimes. You can try right-clicking the application shortcut, selecting Properties, navigating to the Compatibility tab, and running the program in compatibility mode for an older OS like Windows 8. However, disabling hardware acceleration is generally a more reliable fix.
What should I do if none of the troubleshooting steps fix the freezing?
If resetting preferences, updating drivers, and changing settings fail, the issue may be an unpatched bug in your specific software version (like Acrobat Pro 2017). Using a reliable alternative PDF editor like WPS Office ensures you can continue working without interruptions.




