PDF Security & Access Issues

How to Add or Access the Protection Tool in Acrobat Reader DC

Rana GarciaRana Garcia Oct 28, 2026 868 views

Question details

The user wants to know how to add or use the Protection tool in Acrobat Reader DC to secure documents.

How to Add the Protection Tool to Acrobat Reader DC
Product
Adobe Acrobat Reader DC
Device & OS
not provided
Scenario
Attempting to secure or encrypt a PDF document with a password using the built-in Adobe tools.
Observed behavior
The Protection tool is unavailable, and the application prompts the user to pay for a subscription to access advanced features.
Before you start

Verify which version of Adobe Acrobat you currently have installed on your device, as advanced security feature availability depends strictly on your software tier.

Solution 1Recommended

Upgrade to a Paid Adobe Acrobat Subscription

To use the Protection tool, you must transition from the free Reader version to a paid Adobe Acrobat subscription, as the feature is not included in the free tier.

Acrobat Reader DC is a free application designed primarily for viewing, printing, and commenting on PDFs. It is not designed for editing or other advanced functions.

The Protection tool requires a licensed Acrobat application, such as Acrobat Standard or Acrobat Pro.

1
Choose a Subscription Plan

Go to the Adobe Acrobat official website and purchase a subscription plan for either Acrobat Standard or Acrobat Pro.

2
Download the Full Application

Download the full Acrobat desktop application provided in your subscription email or from your Adobe account portal.

3
Sign In to Activate

Launch the newly installed software and sign in with the Adobe ID associated with your active subscription to unlock the Protection tool.

Upgrade to a Paid Adobe Acrobat Subscription
Check Existing Subscriptions: If you already pay for a subscription, ensure you are signed into the correct Adobe account and are launching the full 'Adobe Acrobat' application, rather than 'Acrobat Reader'.
Easily Secure Your PDFs

Protect Your PDFs Seamlessly with WPS Office

If you need to encrypt your documents without navigating expensive and complex subscription tiers, you can easily secure your files with passwords using WPS Office. WPS offers comprehensive PDF protection tools within a lightweight, user-friendly interface.

  1. 1. Open your PDF Document: Launch WPS Office and open the PDF file you wish to protect.
  2. 2. Access the Protect Tab: Navigate to the 'Protect' tab located on the top menu ribbon.
  3. 3. Select Document Encryption: Click on the 'Encrypt' button to open the document security settings dialog.
  4. 4. Set Your Password: Check the 'Set Open Password' box, type your desired password, confirm it, and click 'Confirm' to secure your file.
Add robust open passwords to protect PDFs from unauthorized viewing.Set specific permission passwords to restrict editing, printing, and copying.Maintains strict formatting compatibility with Microsoft Office and standard Adobe PDF files.Lightweight software architecture ensures fast loading even for large PDF documents.
microsoft office alternative - wps office

Frequently Asked Questions

Why is the Protection tool grayed out in my Acrobat application?

The Protection tool is a premium feature. In the free version of Acrobat Reader, advanced tools are visually present but grayed out, and they will prompt you to purchase a subscription when you try to click on them.

Can I protect a PDF with a password for free without upgrading?

Acrobat Reader does not offer free password protection. However, you can use alternative comprehensive suites like WPS Office, which provide accessible PDF encryption tools without requiring an Adobe subscription.

What is the difference between Acrobat Reader DC and Acrobat Pro DC?

Acrobat Reader DC is a free PDF viewer equipped with basic reading and commenting tools. Acrobat Pro DC is a paid, premium software that allows you to create, edit, sign, and securely protect PDF documents.