How to I use a custom attachment previewer in Outlook (2013)? RRS feed

  • Question

  • Hello all,

    I've written a custom document previewer as per the instructions at

    The previewer works fine in Windows Explorer, but I'd like to configure Outlook so that attachments of the appropriate type can be previewed. However, Outlook doesn't honour my previewer - The reading pane says "This file cannot be previewed because there is no previewer installed for it". If I navigate to the "Trust Center" and look at the list of installed previewers, mine is absent. However, if I open Outlook's file open dialog to attach a file I can preview my documents in that dialog.

    How do I / Is it possible to , add a custom attachment previewer to Outlook?



    Thursday, November 5, 2015 2:06 PM


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