Error Loading Document: The encryption method with code 4 is not supported

2 posts, 0 answers
  1. Brad Harrison
    Brad Harrison avatar
    6 posts
    Member since:
    Jul 2009

    Posted 24 Apr 2017 Link to this post

    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?)



    Brad Harrison

    Better Baked Foods


  2. Dess | Tech Support Engineer, Sr.
    Dess | Tech Support Engineer, Sr.  avatar
    4170 posts

    Posted 25 Apr 2017 Link to this post

    Hello Brad, 

    Thank you for writing.  

    Currently, this is not supported in RadPdfViewer. We already have a feature request logged in our feedback portalYou can track its progress, subscribe for status changes and add your comments on the following link:

    Currently, this feature is not scheduled for the upcoming release. The more customers vote for it, the higher its priority becomes. 

    Should you have further questions I would be glad to help.

    Telerik by Progress
    Try our brand new, jQuery-free Angular 2 components built from ground-up which deliver the business app essential building blocks - a grid component, data visualization (charts) and form elements.
Back to Top