Fix Acrobat PDF Form Submit Button Freezing the Computer
Question details
A fillable PDF form becomes completely unresponsive and causes the system to spin indefinitely when the Submit button is triggered.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Interacting with a fillable PDF form and attempting to submit the entered data using a custom submit button.
- Observed behavior
- The computer freezes and spins in an endless loop upon hovering over or interacting with the submit button, requiring a forced quit of the application.
Ensure you have saved a backup copy of your PDF form before making changes to its interactive properties, as adjusting button behaviors can alter the document's structure.
Change the Button Event Trigger to Mouse Up
Replacing the continuous 'Mouse Enter' trigger with a discrete 'Mouse Up' action prevents the system from getting stuck in an infinite submission loop.
A common cause of freezing is configuring the submit action to trigger on 'Mouse Enter'. Because the mouse stays over the button, the event fires continuously, overloading the application. Changing this to 'Mouse Up' ensures the action only fires once after a complete click.
Open your PDF form in Adobe Acrobat and navigate to the 'Prepare Form' tool to enter editing mode.
Right-click the problematic Submit button and select 'Properties' from the context menu.
Navigate to the 'Actions' tab. In the 'Select Trigger' dropdown menu, change the setting from 'Mouse Enter' to 'Mouse Up'.
Click 'Close' on the Properties dialog, exit the Prepare Form tool, save the document, and test the submit button.

Test the Form in Desktop Reader Instead of Preview Mode
In-app editor preview modes can sometimes misinterpret interactive elements, causing unresponsiveness that doesn't occur in standard viewing modes.
Verify the Submission Target and Check for Errors
An invalid submission URL or broken JavaScript attached to the button can crash the submission process.
Edit and Fill PDF Forms Smoothly with WPS Office
Avoid system crashes and unresponsive forms. WPS Office provides a lightweight, highly compatible PDF editor that allows you to easily create, fill, and submit interactive PDF forms without freezing.
- 1. Install WPS Office: Download and install WPS Office on your computer or mobile device.
- 2. Open your PDF form: Launch WPS PDF and click 'Open' to browse and load your fillable PDF document.
- 3. Interact and fill: Click directly on the interactive form fields to enter your data smoothly without lag.
- 4. Submit or save: Click the designated submit button or save your filled form locally by pressing Ctrl + S.

Frequently Asked Questions
Why does the 'Mouse Enter' trigger cause my PDF form to freeze?
The 'Mouse Enter' trigger fires continuously as long as your cursor hovers over the button area. For a complex action like form submission, this rapid, repeated triggering overloads the application and causes an infinite loop, freezing the computer.
How can I view JavaScript errors in Adobe Acrobat?
You can open the JavaScript Debugger console in Acrobat by pressing Ctrl+J on Windows or Cmd+J on Mac. This window displays syntax errors or runtime warnings that may be causing your interactive buttons to fail.
Can I fill out interactive PDF forms without using Adobe Acrobat?
Yes, many modern PDF readers and comprehensive suites like WPS Office fully support viewing, filling, and submitting interactive PDF forms flawlessly and often use fewer system resources.




