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Editorial Team
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Asked: 2026-06-13T17:27:18+00:00

I am developing a VSTO 2010 Office 2007 Outlook Add-In deployed from Click-Once. On

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I am developing a VSTO 2010 Office 2007 Outlook Add-In deployed from Click-Once. On the computer I developed it, running Visual Studio, everything works just fine, but when trying to install it on another computer, the addin is installed, and during the startup screen, It comes under Inactive Applications Add-in.

In Load Behavior, It shows Not Loaded.A Runtime error Occured during the loading of the COM-Add-in.I have changed the Load behavior from 2 to 3 in HKCU under Registry Editor.But it is again reverted back to 2.Not sure how to find the specific error so I can fix it.

Does anyone have any ideas on what might be causing this?

Any ideas anyone might have would be greatly appreciated.

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1 Answer

  1. Editorial Team

    Finally I have found a solution by myself.What I have done is Before I published a solution I was checked .Net Framework 3.5 SP1 Client Profile in prerequisites under Install settings and it works for me now.

    See Here

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