PdfReader not opened with owner password error in iText

Question

With reference to this

http://stackoverflow.com/questions/17524857/merging-pdf-in-asp-net-c-sharp/17525948?noredirect=1#comment25485091_17525948 

question of mine, I have user IText for merging the pdf documents. I am getting " PdfReader not opened with owner password " for some files. Any suggestions

Answer 1

Add this code after PdfReader definition

PdfReader.unethicalreading = true;

Answer 2

For iText 7 it is

PdfReader pdfReader = new PdfReader(PATH + name + ".pdf");
pdfReader.setUnethicalReading(true);

See also: itext7-how-decrypt-pdf-document-owner-password