PDF Security & Access Issues

How to Fix PDF Opens in Read-Only Mode with Disabled Security Settings

Olivia MillerOlivia Miller Oct 28, 2026 870 views

Question details

The user is unable to modify security settings or edit a PDF because it automatically opens in read-only mode with the Security Method option disabled.

How to Fix PDF Opens in Read-Only Mode with Disabled Security Settings
Product
PDF Reader and Editor
Device & OS
not provided
Scenario
Attempting to apply security settings or edit a newly created PDF converted from a Word document.
Observed behavior
The PDF opens in read-only mode, and the Security Method is grayed out displaying 'No Security', preventing any permission changes.
Before you start

Ensure the PDF file is saved locally on your computer and is not currently open in another program before attempting to change its view or security preferences.

Solution 1Recommended

Disable PDF/A View Mode in Preferences

PDF/A files automatically open in read-only mode to preserve document archiving standards. Disabling this view mode restores editing and security configuration capabilities.

When a document is created using the PDF/A standard, PDF readers automatically lock the document to prevent changes that might affect long-term preservation. You must disable this viewing mode to regain access to security settings.

1
Open Application Preferences

Launch your PDF application and navigate to Edit > Preferences from the top menu bar.

2
Locate Document Settings

In the Preferences window, select 'Documents' from the left-hand category list.

3
Change PDF/A View Mode

Find the 'PDF/A View Mode' section and change the dropdown setting for 'View documents in PDF/A mode' to 'Never'.

4
Reopen and Configure Security

Click OK to save your changes. Close and reopen the PDF file, then go to File > Properties > Security to configure your desired editing restrictions.

Disable PDF/A View Mode in Preferences
Understanding PDF/A: PDF/A is an ISO-standardized version of the PDF specialized for use in the archiving and long-term preservation of electronic documents. It naturally restricts encryption to ensure future readability.
Seamless PDF Editing

Manage PDF Security Effortlessly with WPS Office

WPS Office provides a comprehensive PDF toolkit that allows you to easily edit, convert, and secure your PDF documents without the confusion of locked archiving modes.

  1. 1. Open the PDF in WPS Office: Launch WPS Office and open your PDF file using the built-in PDF reader.
  2. 2. Access Security Tools: Navigate to the 'Protect' tab located on the top ribbon menu.
  3. 3. Apply Encryption: Click on 'Encrypt' to set an open password or restrict editing and printing permissions easily.
  4. 4. Save Changes: Click 'Confirm' and save the document to apply the new security parameters.
Easily apply or remove password protection and editing restrictions.Fully compatible with standard PDF formats and Adobe Acrobat files.Edit text, images, and pages directly within your PDF documents.Lightweight, fast-loading, and user-friendly interface.
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Frequently Asked Questions

Why does my PDF say 'Read-Only' at the top?

Your PDF may be marked as read-only because it was saved in PDF/A mode (used for long-term archiving), the file properties in your operating system are set to read-only, or the author applied specific editing restrictions.

How do I remove the read-only status from a PDF file system?

If the read-only status is a file system issue, right-click the file in Windows File Explorer, select Properties, uncheck the 'Read-only' attribute box at the bottom, and click Apply.

Can I add a password to a PDF/A document?

No, the PDF/A standard strictly forbids encryption and password protection to ensure the document can be accessed easily in the future. You must save the document as a standard PDF to apply security settings.