No, this can't be done with a script. You can use an Action, though, if the password is the same for all files, and you know it, of course.
Yes, you can use an Action (via Tools - Action Wizard) to remove security from multiple files.
ok thanks and can you export the action for acrobat xi?
You can create it in Acrobat XI Pro... Not sure what you mean by "export it".
en Acrobat XI ya lo hice y no me funciona ... nuevo action-protection-code-no-save
Y no hace nada, todavía tiene la contraseña ....
If you want to change the protection, you must save the file.
yes yes I do but do nothing