I have a WPF outlook add-in which is developed in Visual Studio 2008 with C#. It is working fine with Microsoft outlook 2003, 2007 & 2010. But when I installed it in outlook 2013, its not getting activated. When I try to activate it , the following exception is seen.
not loaded : a runtime error occurred during the loading of the com add in outlook 2013
If you have come across such a situation and found a solution, Please guide me.
If you're getting runtime errors on Outlook for Web, check if something's interfering with the web app. First, update your browser to the latest version. Then, clear your browser cache and cookies. If the issue persists, disable all of your extensions, refresh the Outlook tab, and check if the problem persists.
To solve the problem, select “Disabled Items” in the “Manage:” drop down at the bottom of the dialog and click “OK”. In the Disabled Items dialog select the add-in and click “Enable” and then close the dialog.
If you are talking of VSTO addin, it depends on what version of office com libraries you refer in the project. You may have to go through the below link: Develop outlook add-in compatible with multiple versions
Alternatively, you can use add in express toolkit to build one Addin targeting multiple MS office versions. https://www.add-in-express.com/
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