Outlook 2010 form region preview pane RRS feed

  • Question

  • Hi All,

    I have a form region (replace-all) that I use for Outlook 2013 & 2016 that works wonderfully. When I load may addin in Outlook 2010 the form region in the preview pane does not work. I do not even get an event to load the form region. I notice all the examples I have seen, the XML manifest file does not set he "showReadingPane" value to true. Is the preview pane supported in Outlook 2010?

    Monday, August 6, 2018 9:52 PM

All replies

  • Hello Thomas Lee3,

    Outlook 2010 surely support preview pane. However, it is hard to say if it could support your custom form region.

    Usually while developing a add-in, we need consider its Backward Compatibility. The common solution is to develop your add-in in an earlier version outlook. Could you create a new Office 2010 Outlook add-in to check if it is related to Outlook version?

    Best Regards,


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    Tuesday, August 7, 2018 9:39 AM
  • Hi Terry,

    I have created a VS 2015 sample project that demonstrates the issue. However I cannot find a way to upload the project zip file. I will provide the source as soon as I come up with a way for you to see it, :-)

    Tuesday, August 7, 2018 9:04 PM
  • Code at githup 
    Tuesday, August 7, 2018 9:17 PM
  • An update from Microsoft.

    I submitted a payed incident support case (118080818748128). After three weeks Microsoft told me that they will not support Outlook 2010 anymore. Yep, it took them three weeks to tell me that. After I created a sample addin for them and demonstrated the issues to them they waited three weeks to tell me they would not support Outlook 2010.

    I have concluded that the form region replace-all logic positively does not work for Outlook 2010 and should not be attempted. I can positively tell you that the adjoining logic works for Outlook 2010, but any replacement should not be attempted.

    Tuesday, August 21, 2018 7:37 PM