If you subscribe to Adobe Acrobat Pro, open the password-protected PDF, navigate to Menu > Protection > Security, then select "No Security" from the Security Method drop-down menu.

Sending important documents? Learn how to password protect PDFs for extra security using easy steps with Adobe Acrobat and free online tools.

This guide will show you how to safely unlock your password-protected documents — including PDFs, Word, and Excel files — using Wondershare Dr.Fone.

How to Merge Encrypted PDF Files. Small businesses working with sensitive PDF documents may choose to encrypt those documents. An encrypted PDF is password protected, which means you cannot open ...

In Word, Excel, or PowerPoint for Windows, open the file you want to protect with a password, then select File and Info. You should see a Protect option at the top of the next list: Click this ...