The damage could have occurred during the document's creation or email transmission where the document isn't correctly decoded. Damaged PDF files: Sometimes, someone may send you a damaged file.Unfortunately, some of these programs do not follow the correct standards. PDF files created using non-Adobe programs: Many programs can make portable document files.Adobe Inc continuously releases updates of its software to incorporate new features and enhance security.
This problem is usually an inadvertent human error. Occasionally some files may erroneously have the default application set to Adobe Reader.
