Other PDF Issues

Fix Acrobat Pro DC Crashing When Editing or Commenting on PDFs

Chanuka GeekiyanageChanuka Geekiyanage Nov 3, 2026 869 views

Question details

The user experiences consistent application crashes when attempting to edit or add comments to PDF files in Adobe Acrobat.

Fix Acrobat Pro DC Crashing When Editing or Commenting
Product
Adobe Acrobat Pro DC
Device & OS
64-bit Windows 7
Scenario
Modifying PDF documents by editing text or adding annotations and comments.
Observed behavior
The application crashes immediately during editing or commenting, and standard reinstallation has not resolved the issue.
Before you start

Before proceeding with these troubleshooting steps, ensure you have saved copies of any open PDF documents to prevent data loss, and verify that your Windows 7 system has all available OS updates installed.

Solution 1Recommended

Repair the Installation and Check for Updates

Running the built-in repair tool can fix corrupted installation files that cause Acrobat to crash during PDF editing.

Acrobat Pro DC includes a built-in repair utility that scans for and replaces missing or corrupted application files. This is often the quickest way to resolve unexpected crashes associated with specific tools like editing or commenting.

1
Launch Acrobat

Open Adobe Acrobat Pro DC on your computer.

2
Run Repair Installation

Go to the 'Help' menu at the top of the window and select 'Repair Installation'. Wait for the process to complete.

3
Restart and Update

Restart your computer. Open Acrobat again, go to 'Help' > 'Check for Updates' to ensure you are on the latest build, then test the commenting feature.

Repair the Installation and Check for Updates
Free Microsoft Office alternative

Edit and Comment on PDFs Smoothly with WPS Office

If Acrobat Pro DC continues to crash on your system, consider switching to WPS Office. WPS PDF is a lightweight, highly compatible PDF editor that lets you easily edit text, add comments, and manage PDF pages without heavy system resource demands.

  1. 1. Download WPS Office: Install WPS Office for free from the official website.
  2. 2. Open Your PDF: Launch WPS PDF and open the document you wish to edit.
  3. 3. Edit and Comment: Navigate to the 'Edit' or 'Comment' tab to add annotations, modify text, and highlight sections seamlessly.
Flawless compatibility with standard PDF files and Microsoft Office formats.Lightweight application that runs smoothly without crashing, even on older operating systems like Windows 7.Built-in PDF editing, commenting, and annotation tools available in a familiar interface.Completely free to download and use for basic office and PDF viewing tasks.
microsoft office alternative - wps office

Frequently Asked Questions

Why does Acrobat Pro DC crash specifically when adding comments?

This is often caused by a corrupted 'annot.api' plug-in file or conflicting third-party extensions that fail to load properly when the annotation tools are activated.

Will resetting Acrobat preferences delete my PDF files?

No, resetting Acrobat preferences only restores the application's interface and settings to their default state. Your saved PDF documents will remain completely unaffected.

Is Windows 7 still supported by Adobe Acrobat Pro DC?

Adobe has ended official support for Windows 7 for newer versions of Acrobat DC. You may need to use an older supported build or consider alternative lightweight PDF editors like WPS Office for a stable experience.

How do I know if a specific PDF is causing the crash?

Try opening a completely new, blank PDF and adding a comment. If the application does not crash, the original PDF file may be corrupted, heavily restricted, or contain overly complex elements.