How to Fix Acrobat Pro 2020 Freezing When Opening PDF Hyperlinks
Question details
The user is experiencing application freezes and unresponsiveness in Adobe Acrobat Pro 2020 when attempting to click and open hyperlinks embedded within PDF documents.

- Product
- Adobe Acrobat Pro 2020
- Device & OS
- not provided
- Scenario
- Clicking a hyperlink inside a PDF file to open a web page or external resource.
- Observed behavior
- Acrobat Pro 2020 completely freezes and stops responding upon clicking a hyperlink, despite the identical links functioning properly when the PDF is viewed in a web browser.
Ensure you have a stable internet connection and test the same PDF in a web browser to confirm the hyperlinks are valid and functioning correctly.
Disable Protected Mode and Enhanced Security (Windows Only)
Temporarily disabling Acrobat's built-in security features helps determine if they are actively blocking external URL requests and causing the application to freeze.
Acrobat's Protected Mode acts as a security sandbox. Occasionally, this sandbox blocks external hyperlink execution, resulting in an application freeze. Disabling this temporarily allows you to isolate the problem.
Open Adobe Acrobat Pro 2020, click on 'Edit' in the top menu bar, and select 'Preferences'.
In the Preferences window, select 'Enhanced Security' from the Categories pane on the left side.
Uncheck the box that says 'Enable Protected Mode at Startup' and toggle off 'Enhanced Security'.
Click 'OK' to save your changes, restart your computer, and try opening the PDF hyperlink again.

Repair the Acrobat Installation
Corrupted or missing application files can lead to instability and unresponsiveness when executing basic functions like opening links.
Test with a New User Profile
Creating a new user profile helps determine if the freezing issue is caused by corrupted user-specific configuration files.
Use WPS Office to Seamlessly Open and Manage PDF Links
If your current PDF reader continuously freezes, you can utilize the built-in PDF reader in WPS Office. It provides a highly stable, lightweight environment to easily open, view, and interact with PDF hyperlinks without system lockups.
- 1. Install WPS Office: Download and install WPS Office for free from the official WPS website.
- 2. Open Your PDF File: Launch WPS Office, click on the 'PDF' tab on the home screen, and select 'Open' to browse for your document.
- 3. Interact with Hyperlinks: Scroll to the link within your document and click it. WPS Office will instantly process the request and open the target URL in your default web browser.

Frequently Asked Questions
Why do PDF hyperlinks work perfectly in my web browser but freeze in Acrobat Pro?
Web browsers use their own integrated PDF viewers which do not rely on Acrobat's internal security sandboxing (Protected Mode). If Acrobat's security settings are conflicting with your system's network requests, it will freeze in the desktop app but work fine in a browser.
Is it safe to leave Protected Mode disabled in Adobe Acrobat permanently?
No. Protected Mode provides a critical layer of defense by restricting malicious code inside PDF files from accessing your computer's system files. You should only disable it temporarily to troubleshoot issues.
How can I check if the PDF file itself is causing the freeze?
You can isolate the issue by opening a completely different PDF file that contains hyperlinks. If other PDFs work fine, the original document might be corrupted or improperly formatted. If all PDFs freeze, the issue lies with the application or your operating system settings.




