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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,

1 solution

Office 2007 and 2010 came with the VSTO for their respective versions and 2010 was backwards compatible. With 2013, you need to install the 2010 or 2007 VSTO on the machine or update your project to VSTO 2013. Keep in mind the object factory model changed extensively since 2013 making it a fun task of upgrading.
Vikas Baisla 9-Aug-13 3:38am
@virusstorm, thanks for the reply, I have already installed the vsto 2007 on my machine, If I upgrade my solution to VSTO 2013, then will it continue to support outlook 2007 and 2010. I need to support all of these three versions(i.e office 2007, 2010 and 2010).
virusstorm 9-Aug-13 8:32am
If you target 2010, you should be OK. I can't guarantee it as a lot changed between 2010 and 2013. Without knowing how you are interacting with the object model, I can't say for certain.

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