Unlocking a Password Protected Adobe Acrobat File

Problem

When trying to open an Adobe Acrobat file the user is asked to provide a password.

Uploaded Image (Thumbnail)

Cause

Another authorized user has password protected and/or encrypted this Adobe Acrobat PDF file.

Solution

Contact the publisher of the article and ask for the password to view the file.

Note: IT has no method to unlock password-protected files.