Visual Studio 2010 Tools For Office Runtime End Of Life

Modern runtimes rely on .NET Framework 4.8 or .NET 6/8. The VSTO 2010 runtime is tied to older CLR versions, leading to assembly binding conflicts when newer security patches are applied to Windows.

...these could stop functioning correctly on newer operating systems, or worse, become a security liability. visual studio 2010 tools for office runtime end of life

Microsoft recommends moving to the Visual Studio 2015 Tools for Office Runtime . Despite the name, this runtime is newer and supports modern Office clients. It is the last "standalone" runtime that supports most legacy VSTO solutions with minimal code changes. Modern runtimes rely on

You cannot stay on VSTO 2010 forever. Here are the three viable paths: visual studio 2010 tools for office runtime end of life