Outlook 2007 Add-In Not Loading on Outlook 2013 RRS feed

  • Question

  • Hi all,

    We have built a VTSO office add-in using Visual Studio 2008 (C#,vsto 2.0 runtime) targeting office 2007 as the minimum version. Works fine on 2007 and 2010 version of outlook, word, excel and power point.

    It is also working on 2013 version of word, excel and power point but do not load on outlook 2013. We do not get any kind of error message.

    Any help will be appreciated.

    Thanks in advance,


    Wednesday, August 7, 2013 6:42 AM


All replies

  • Hi,

    Take a look at the following update rollup, issue 5:

    Seems like it might be your problem. Try to install the latest version of VSTO -


    • Edited by YoavY Wednesday, August 7, 2013 8:17 AM
    • Marked as answer by Sophia Gou - MSFT Thursday, August 22, 2013 1:56 AM
    Wednesday, August 7, 2013 8:07 AM
  • Hi Yoav,

    Thanks for help, the links you provided is for the addins developed over VS2010...but my addins is developed on VS2008 and vsto2.0.

    Wednesday, August 7, 2013 10:43 AM
  • Hi Vikas,

    Issue 5 talks about add-ins that are built with VSTO 2.0(2005) and not VSTO 2010.

    If you have VSTO 4(2010) version 10.0.31125 and below (that is included with office 2013 installation), those add-ins will not work.  

    Wednesday, August 7, 2013 12:42 PM
  • Hi YoavY,

    Again thanks for your quick response, but as I have mentioned in my original question, my addin is working fine on Word, Excel and Powerpoint, but not on Outlook. If this is the case (suggested in Issue 5) then it should not work with Word, Excel and Powerpoint also.

    Please suggest ...


    Wednesday, August 7, 2013 2:00 PM
  • Hi Vikas,

    Would you mind letting us know the latest information about this issue?
    If you find a solution, could you share it here? So it will be very beneficial for other community members who have similar questions.

    Sophia Gou
    MSDN Community Support | Feedback to us
    Develop and promote your apps in Windows Store
    Please remember to mark the replies as answers if they help and unmark them if they provide no help.

    Friday, August 16, 2013 8:33 AM