You are an trying to run an add-in on a computer that doesn't have the runtime pre-installed.
You are a deploying a solution to a server environment. visual studio 2010 tools for office runtime 4.0 download
Before proceeding with the download, ensure your environment meets these standards: You are an trying to run an add-in
You must have .NET Framework 3.5, 4, 4.5, or newer installed before the VSTO runtime can be set up. How to Download and Install Visual Studio 2010 Tools for Office Runtime - Microsoft and Windows Server 2012 through 2022.
Supports Windows 7 (SP1) through Windows 11, and Windows Server 2012 through 2022.