visual studio - Why am I getting "Unable to find manifest signing certificate in the certificate store" in my Excel Addin?

Question

I've got an Excel add-in project that was created a couple years back in Visual Studio 2008. It's got some changes to be made so I've upgraded to Visual Studio 2010 (the only IDE I am able to use). Not sure if this is causing the problem but it's background information.

When I check out the code and compile it I get the error, "Error 1 Unable to find manifest signing certificate in the certificate store."

Can anyone tell me what this means and how to fix it?

Answer 1

You need to re-add that certificate to your machine or chose another certificate.

To choose another certificate or to recreate one, head over to the Project's properties page, click on Signing tab and either

• Click on Select from store
• Click on Select from file
• Click on Create test certificate

Once either of these is done, you should be able to build it again.