Install and Run PDF Lock Unlock Tool
After installing PDF Lock Unlock Tool go to 'Start menu > Programs > PDF Lock Unlock Demo Version' or run it from the desktop's shortcut icon.
Click the "Unlock PDF" button to Remove PDF Restrictions.
Click the "Browse" button to import the PDF file from which you want to remove the restrictions.
Click the Second ' Browse button to select the desired location where you want to save the unlocked PDF file.
At last you need to click the 'unlock' button to get the PDF file.