How to Fix Locked Acrobat Comments Deleted in SharePoint
Question details
The user needs to know how to prevent PDF comments that were locked in the Acrobat desktop application from being modified or deleted when opened through Acrobat Cloud Reader and SharePoint.
- Product
- Adobe Acrobat and SharePoint
- Device & OS
- not provided
- Scenario
- Collaborating on and reviewing PDF documents using SharePoint integration and Acrobat Cloud Reader.
- Observed behavior
- Comments that were intentionally locked in the desktop application lose their protection and can be modified or deleted in the web viewer.
Verify that your PDF document was completely saved locally after locking the comments and ensure all collaborators are accessing the exact same synced version of the file.
Verify File Saving and Version Synchronization
Ensure the file was saved properly locally before uploading and that SharePoint is loading the updated version with the locked metadata.
Cloud integrations can sometimes experience synchronization delays, or the web viewer may not immediately read the extended metadata that dictates comment locks.
In the Acrobat desktop application, right-click the comment you want to secure, select 'Properties', check the 'Locked' box, and click 'OK'.
Press Ctrl+S (or Cmd+S on Mac) to ensure the locking properties are fully embedded in the PDF's metadata.
Manually upload the newly saved file to your SharePoint directory, or wait for your desktop sync client to confirm the upload is complete.
Open the PDF via Acrobat Cloud Reader in SharePoint to check if the lock status is now correctly retained.
Flatten the PDF to Permanently Secure Comments
If cloud viewers continuously bypass comment locks, flattening the PDF merges comments into the document base layer, making them completely uneditable everywhere.
Restricting PDF Editing via Security Policies
Apply document-level password security to universally prevent any modifications to the PDF, including the deletion of comments.
Try WPS Office for Secure PDF Management
Cross-platform compatibility issues between different software and cloud services can often expose your document metadata. WPS Office offers a free, lightweight, and user-friendly alternative with excellent format compatibility and seamless migration, allowing you to securely manage PDFs and Office files in one place.
- 1. Download WPS Office: Visit the official WPS website to download the free installation package for your operating system.
- 2. Install the software: Run the downloaded installer and follow the quick on-screen instructions to complete the setup.
- 3. Open your documents securely: Launch WPS Office, click 'Open', and select your PDF or Office files to view, edit, or secure them effortlessly.
Frequently Asked Questions
Why do locked PDF comments become editable in SharePoint?
Web-based viewers like Acrobat Cloud Reader and SharePoint's built-in PDF viewer sometimes do not fully enforce the extended PDF metadata used by the desktop app for comment locking, allowing users to modify or delete them.
Does the 'Lock' feature prevent the original author from deleting their own comment?
In most PDF applications, locking a comment primarily prevents accidental edits. The original author, or someone with administrative rights to the document, can usually unlock and delete the comment if they choose to.
How can I permanently prevent comments from being changed or deleted?
The most reliable method to make comments uneditable is to 'flatten' the PDF. By printing the document to a new PDF file with markups included, comments are permanently merged into the visual layer of the document.
Will a permissions password protect my comments in web browsers?
Yes, applying document-level password security to restrict editing generally enforces protection across most standard web viewers, preventing unauthorized structural changes and comment deletion.
