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I have an Office 2013 COM AddIn which runs fine at Windows 7 Prof. but on Windows 8.1 it doesnt show up. Both machines have Office 2013 installed.

When I check the AddIn-Options on the 8.1 machine I find my COM AddIn under active AddIns (location: mscoree.dll, type: COM Add In)

But the AddIn, which extends the backstage menu by one tab, doesnt show up.

Are there any 8.1-specific options or other things I have to consider?

user4429978
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1 Answers1

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No, it doesn't matter what OS is used. Did you try to debug the add-in? Do you get any exceptions in the code?

Also I'd recommend checking for any UI errors. See How to: Show Add-in User Interface Errors for more information.

Eugene Astafiev
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