I have seen other similar posts but the suggested solutions of using FileStream and opening for ReadWrite Access does not work for me.
I fill some fields of a PDF document electronically from ASP.NET MVC 5. All the fields should remain editable(via Adobe Reader) after the filling but the “extended features no longer available” message is displayed and the PDF document is no longer editable.
Any suggestions on how to get past this, I assume the digital signature of the document is changed by the save and not necessarily the filling, which disables the extended features.
thanks
Johann