How to lock PDF files (1-4 pages) from editing, copying, printing and archiving Jan 30, 2023 -1. Go to Acrobat, and select the PDF file you want to lock.· Double check that the page size and page margins are at least 32 pixels apart.· If the size is not enough then change the width of 32 pixels to be bigger than the original content.· Click on the button at the bottom to lock it. Note; if you want to lock the PDF and allow editing but not archiving or printing, choose the “Protect All PDF” checkbox.· Press OK to save your settings changes. · Go to your Adobe Acrobat user settings in Acrobat, and make sure that the following checkboxes are checked:· Note; this can also be done by going to Settings and then the allow Editing… tab.· Check the following:· Check the following: How to enable protection of sensitive PDF files. If you have a PDF containing sensitive information you can lock the file from editing, copying, sharing and printing. You can also copy, print and archive the file without having to pay 99 for the privilege. How to lock a PDF to allow only certain Adobe products to view and access the PDF Jan 30, 2023 – 1. To allow only selected Adobe Acrobat products access to the file, click on your File name in the right lower corner of the PDF.· Click the Access Options button. How to lock a PDF that requires passwords May 24, 2023 – 1.