PDF Editing Issues

How to Fix Locked Add Text Comment Properties in Adobe Acrobat

Kushani NimanthikaKushani Nimanthika Nov 3, 2026 869 views

Question details

The user is unable to modify the default properties of the Add Text Comment tool because the lock option is selected and grayed out.

How to Fix Locked Add Text Comment Properties in Adobe Acrobat
Product
Adobe Acrobat Pro XI / DC
Device & OS
not provided
Scenario
Attempting to modify and save the default text styling and properties for the Add Text Comment tool in a PDF document.
Observed behavior
The lock option in the tool's properties is checked but disabled (grayed out), preventing the user from changing or saving new default text properties.
Before you start

Before attempting workarounds, verify whether this issue happens with every PDF or only a specific document, as restricted file permissions can automatically disable commenting tools.

Solution 1Recommended

Verify PDF Document Security Settings

Check if the document author has restricted commenting permissions, which causes the text properties panel to be disabled.

1
Open Document Properties

Open the problematic PDF file, navigate to the 'File' menu, and select 'Properties'.

2
Check the Security Tab

Click on the 'Security' tab at the top of the Document Properties dialog box.

3
Confirm Commenting Permissions

Look for 'Commenting' in the Document Restrictions Summary list and ensure its status is marked as 'Allowed'.

Verify PDF Document Security Settings
Permission Required: If commenting is marked as 'Not Allowed', you will need the original owner's permission password to unlock the document and modify text properties.

Easily Add and Customize Text Comments in WPS PDF

Avoid frustrating software glitches and easily manage your PDF annotations with WPS Office. WPS PDF provides a lightweight, user-friendly interface to add, edit, and format text comments seamlessly without locked property bugs.

  1. 1. Open Your PDF: Download and install WPS Office, then open your PDF file using the WPS PDF editor.
  2. 2. Access Comment Tools: Navigate to the 'Comment' tab located on the top ribbon menu.
  3. 3. Add Text Comment: Click 'Text Comment' and click anywhere on the document page to start typing.
  4. 4. Customize Properties: Highlight your text and use the right-side properties panel to instantly change fonts, sizes, and colors without dealing with locked dialog boxes.
Intuitive property panels for hassle-free font and color customizationFully compatible with standard Adobe PDF file formatsLightweight and fast performance compared to heavy PDF editorsFree to use for basic PDF viewing and annotations
microsoft office alternative - wps office

Frequently Asked Questions

Why is the lock checkbox disabled on my PDF text comments?

The lock checkbox is typically disabled if the document has strict security restrictions that prevent commenting, or it may be due to a known software bug in specific software versions like Acrobat Pro XI and DC.

How do I unlock a PDF to allow commenting?

If you have the permission password, go to File > Properties > Security, change the Security Method to 'No Security', and enter the password. This will remove restrictions and unlock commenting features.

Can I change text comment properties without opening the properties dialog box?

Yes. In modern PDF editors like WPS PDF, you can change text properties directly from a quick formatting toolbar or sidebar that appears when you highlight the text, bypassing the need for a separate dialog box.