logo
search
PDF Security & Access Issues

How to Unlock a PDF File Before Emailing It on Windows and Mac

Maira MehtabMaira Mehtab Oct 22, 2026 870 views

Question details

The user needs to remove a system lock on a completed PDF job application so that the file can be attached and sent via email.

How to Unlock a PDF File Before Emailing It
Product
PDF
Device & OS
Windows, macOS
Scenario
Attempting to attach and email a completed PDF form, such as a job application.
Observed behavior
The PDF file is locked and cannot be emailed, but the PDF reader does not prompt for a password when the file is opened.
Before you start

Ensure you have the necessary administrative privileges on your computer and are authorized to modify the file properties of the PDF document.

Solution 1Recommended

Remove the File Lock on macOS

Use this method if you are using a Mac and the PDF has been locked at the system level.

When a PDF does not prompt for a password upon opening but still cannot be attached to an email, macOS may have locked the file properties to prevent changes.

1
Locate the file

Open the Finder app on your Mac and navigate to the folder containing the locked PDF job application.

2
Open Get Info

Click on the PDF file once to highlight it, then go to the top menu bar and select 'File', followed by 'Get Info'. Alternatively, press 'Command + I' on your keyboard.

3
Deselect the lock

In the 'General' section of the Info window, locate the 'Locked' checkbox and uncheck it to remove the system restriction.

Remove the File Lock on macOS
File Unlocked: Once the checkbox is cleared, you should be able to attach the PDF to your email client without any errors.
All-in-One PDF Editor

Manage, Edit, and Share PDFs Effortlessly with WPS Office

If you frequently work with PDF job applications or secure documents, WPS Office provides an intuitive PDF reader and editor to effortlessly manage file properties, remove document-level restrictions, and email files directly from the application.

  1. 1. Open the PDF: Launch WPS Office and open your completed PDF job application.
  2. 2. Manage Permissions: Navigate to the 'Protect' tab to view, add, or remove any document-level encryption.
  3. 3. Share via Email: Click on the 'Menu' button, select 'Share', and choose 'Email' to quickly attach the unlocked PDF to a new outgoing message.
Easily view, edit, and remove password protection from PDFs.Fully compatible with Microsoft Office formats and standard Adobe PDF files.Built-in one-click email sharing for rapid document distribution.Lightweight, free to download, and available on both Windows and macOS.
microsoft office alternative - wps office

Frequently Asked Questions

Why does my PDF say it is locked but doesn't ask for a password?

This usually indicates that the file is locked by your operating system's file properties rather than by PDF-specific encryption. You can resolve this by modifying the file's 'Get Info' settings on Mac or 'Properties' on Windows.

How do I know if a PDF is protected by standard PDF security instead of an OS lock?

If a PDF is protected by document-level security, your PDF reader will typically prompt you for an open password immediately upon opening the file, or it will display a 'Secured' status in the application's title bar.

Can I remove a PDF password if I am not the original owner?

You can only remove a password or restriction from a PDF if you have the right to modify it and know the current permissions password. Without the password, legitimate PDF software will not allow you to bypass document-level encryption.