Reply To: How to Fix the Error “The file is protected it cannot be used for this command”? Michael Scofield ~ Modified: September 26th, 2018 ~ ~ 1 Minute Reading Home › Forums › How to Fix the Error “The file is protected it cannot be used for this command”? › Reply To: How to Fix the Error “The file is protected it cannot be used for this command”? September 26, 2018 at 7:24 am #7445 Score: 0 Michael ScofieldModerator Karma: 20 pts Hi, I don’t have any Adobe Acrobat application as it is more expensive so how can I join secured PDF files. Do anyone have the solution for it? Search