If these keys exist under the 64-bit hive (not under WOW6432Node ), the x64 version is correctly installed.
If VSTOLoader.dll is only found under the x86 subfolder, you have installed the 32-bit runtime. microsoft visual studio 2010 tools for office runtime -x64-
The is a software component developed by Microsoft that acts as a critical bridge between Office-based solutions and the Office applications themselves. Specifically designed for 64-bit systems, this runtime allows developers to create and end-users to run managed code extensions, such as add-ins and document-level customizations, for the Microsoft Office suite. If these keys exist under the 64-bit hive
The Microsoft Visual Studio 2010 Tools for Office Runtime - x64 includes the following key features: Specifically designed for 64-bit systems
Supports Windows 7 SP1 up to Windows 11, and Windows Server 2012 to 2019 .NET Framework: Requires .NET Framework 3.5, 4, 4.5, or later Office Version: