PDF Security & Access Issues

How to Remove Security from a Signed or Signature-Ready PDF

John WilsonJohn Wilson Nov 3, 2026 869 views

Question details

The user needs to remove encryption or security settings from a signed or signature-ready PDF so it can be successfully forwarded to and accessed by a third party.

How to Remove Security from a Signed or Signature-Ready PDF
Product
PDF
Device & OS
not provided
Scenario
Forwarding a digitally signed or signature-ready PDF document to a third party who is encountering encryption or access blocks.
Observed behavior
The signed PDF appears as encrypted or secured to third parties, preventing them from viewing, processing, or adding further modifications.
Before you start

Ensure you have access to the original, unsigned version of the PDF document, as removing security from an already cryptographically signed PDF is intentionally restricted to prevent tampering.

Solution 1Recommended

Use the Original Unsigned PDF Document

Revert to the original document to remove the security settings before any digital signatures are applied.

Applying a digital signature inherently locks a PDF to protect the integrity of the document and prevent unauthorized modifications. Once a document is signed, the PDF standards automatically encrypt or secure the file. To completely remove this security, you must return to the document's unsigned state.

1
Locate the original file

Find the original, unsigned version of your PDF document on your local drive or request it from the document's creator.

2
Remove document security

Open the unsigned PDF in your PDF editor, navigate to the security or protection settings, and disable any password encryption or restrictive permissions.

3
Re-apply signatures

Once the security is removed, send the unsecured PDF for signatures again, or manually re-apply the required digital signatures before forwarding it to the third party.

Why do signatures lock a PDF?: PDF standards automatically apply security to signed documents to ensure that the signature remains valid and the contents haven't been altered after signing.
Manage PDF Security with WPS Office

Easily Manage PDF Security and Signatures in WPS PDF

WPS Office features a powerful built-in PDF editor that allows you to easily remove passwords, adjust document encryption, and manage digital signatures seamlessly.

  1. 1. Open the PDF in WPS: Launch WPS Office and open your original unsigned PDF document.
  2. 2. Access the Protect tab: Navigate to the 'Protect' tab on the top ribbon of the application.
  3. 3. Remove Security: Click on 'Encrypt', uncheck the password options to remove security settings, and click 'Confirm'.
  4. 4. Add Signatures: Use the 'Sign' feature to apply your digital or handwritten signatures to the now-unsecured document, then save the file.
Easily add, modify, or remove PDF passwords and security permissions.Fully compatible with standard PDF formats and Adobe Acrobat signatures.Lightweight and fast PDF viewing, editing, and converting experience.
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Frequently Asked Questions

Why does my signed PDF say 'Secured' or 'Encrypted'?

When a digital signature is applied, the PDF software locks the document to prevent changes. This ensures the signature's validity but also applies security restrictions that may appear as 'Encrypted' or 'Secured' to other users or software systems.

Can I remove security from a PDF without the original file?

If the document is cryptographically signed, removing security usually invalidates the signature or requires the owner's password. To maintain a valid and usable document, you typically need to request an unsecured, unsigned copy from the original author.

How do I remove password protection from a standard PDF?

Open the PDF in your editor, go to the security settings (often under a 'Protect' or 'Security' tab), enter the current password to unlock it, and then clear the password fields to remove the protection permanently. Save the document to apply the changes.