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Opening VSTO project in Visual Studio 2015

There is one project that was originally created at Visual Studio 2010 and its VSTO Word Addin project several years ago.

Now, for maintenance, I have to work on the same project, but only Visual Studio 2015 is available on my machine and its ostentatious warning Unable to open this project.

So how can I update this solution so that I can open my project in VS 2015

The error message that I get when I try to open a project in Visual Studio 2015,

enter image description here

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2 answers

Late, but hopefully a solution can help someone else.

You need to create a new project of the same type. Then open a new project file (first upload the project and right-click to edit the .csproj file).

Then replace the <VisualStudio> section in your old project with content from the newly created. Then reload the old project and everything should work.

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You need to download the "Microsoft Office Development Tools" for Visual Studio 2015. I just downloaded them from this link:

https://www.microsoft.com/en-us/download/confirmation.aspx?id=51683&6B49FDFB-8E5B-4B07-BC31-15695C5A2143=1

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