Cannot decrypt file

I'm trying to view a file but get the error "Cannot decrypt this file".

The file is encrypted using 128-bit RC4

The URL of the file is: http://medsafe.govt.nz/Consumers/cmi/l/losec.pdf

Any help would be greatly appreciated!

Hi

I’m trying to use WpViewPDF in a Delphi 6 application to display a secure PDF file. I am getting the error “Cannot decrypt this file”.

The file I am trying to view is available at:
http://www.medsafe.govt.nz/Consumers/cmi/l/losec.pdf

The file is a secure PDF but the restrictions on the file should allow it to be viewed and printed. I have no problem viewing the file with other PDF viewer applications and they do not prompt for a password. The OnNeedPassword event doesn’t seem to be called in WPViewPDF anyway.

I have used a third-party tool to remove the restrictions from the PDF file and then it displays with WPViewPDF with no problems. This isn’t a solution to what I need to do though as I can’t use the tool to remove the restrictions as the files are downloaded directly to the application and displayed using WPViewPDF.

Can you please provide support for this issue?

Thank you.