PDF Opening Issues

How to Fix PDF That Cannot Be Opened After Adding a Comment

Bushra ParveenBushra Parveen Oct 28, 2026 869 views

Question details

The user is unable to open a PDF file after adding a comment to it, likely due to file corruption or software incompatibility during the saving process.

How to Fix a PDF That Cannot Be Opened After Adding a Comment
Product
PDF Reader
Device & OS
not provided
Scenario
The user added annotations or comments to a PDF document, saved it, and later found the file completely inaccessible.
Observed behavior
The PDF application fails to open the document, often displaying a 'damaged or corrupted PDF' error message.
Before you start

Before troubleshooting, make a copy of the corrupted PDF file to prevent further data loss and check if the issue occurs with all PDFs or just this specific file.

Solution 1Recommended

Troubleshoot and Repair the Damaged PDF File

Use alternative readers or recovery methods to bypass the software conflict and retrieve the file content.

Often, a PDF that throws a corruption error in one specific program can still be opened by alternative software or repaired using built-in recovery tools.

1
Try an Alternative PDF Reader

Right-click the problematic PDF file, select 'Open with', and choose a different application such as WPS Office, Google Chrome, or Microsoft Edge to see if it bypasses the error.

2
Restore a Previous Version

Right-click the corrupted file in Windows File Explorer, select 'Properties', and navigate to the 'Previous Versions' tab to restore the document to a state before the comment was added.

3
Use a PDF Repair Tool

Upload a copy of the damaged PDF to a reputable online PDF repair utility to fix structural errors caused by the commenting glitch.

Troubleshoot and Repair the Damaged PDF File
Identify the Scope: If multiple PDFs are getting corrupted after commenting, the issue lies within the PDF software installation rather than the individual files.
Professional PDF Editor

Safely Add Comments and Edit PDFs with WPS Office

Avoid document corruption and software conflicts by using WPS Office to open, read, and annotate your PDF files. WPS PDF offers a highly stable, lightweight environment for all your commenting and editing needs.

  1. 1. Launch WPS PDF: Open WPS Office and click on the 'PDF' tab on the home screen to launch the built-in PDF editor.
  2. 2. Open Your Document: Click 'Open' and select the PDF file you wish to review and annotate.
  3. 3. Access Comment Tools: Navigate to the 'Comment' tab on the top ribbon to reveal various annotation options like Highlight, Text Box, or Note.
  4. 4. Save Safely: Add your feedback, then click the 'Save' icon or press Ctrl+S to securely save your document without risking file corruption.
Stable saving process prevents file corruption during commentingFully compatible with standard PDF formats and Adobe Acrobat filesLightweight application that opens large PDFs quickly and smoothlyRich set of annotation tools including highlights, shapes, and sticky notes
microsoft office alternative - wps office

Frequently Asked Questions

Why does adding a comment corrupt my PDF file?

This usually happens when there is a software glitch during the saving process, a conflict with the PDF creator software, or if the original file had underlying structural errors before the comment was added.

Can I recover my PDF comments if the file is corrupted?

If you have a backup or a previous version saved in your cloud drive or Windows File History, you can easily restore it. Otherwise, you may need to use a dedicated PDF repair tool to recover the text and annotations.

Does changing the PDF reader prevent commenting errors?

Yes, sometimes the corruption issue is specific to a bug in one application. Opening and commenting on the file using an alternative, lightweight PDF editor like WPS Office can bypass these software-specific conflicts.