We have been using the PDF viewer and support built into WinForms for some time for viewing PDF files from our vendors. Just in the last month or two we have been getting documents that are not viewable in the Winforms application but are viewable with Adobe Acrobat.
We are getting the error message: "Error loading document: The encryption method with code 4 is not supported".
I did a google and see a Telerik enhancement request to resolve this. (with 8 "likes")
Telerik folks -- any idea when/if this might be supported? Not being able to view some documents is obviously a problem.
Anyone -- If you get documents that aren't viewable is there any process that you have found that would make them work? (some sort of PDF to PDF conversion?)
Better Baked Foods