When dealing with the x64 runtime, IT administrators and developers frequently encounter specific errors:
$userVsto = "$env:USERPROFILE\AppData\Local\Apps\2.0" if (Test-Path $userVsto) Write-Host "User VSTO add-ins folder: $userVsto" else Write-Host "No user-installed ClickOnce VSTO add-ins found." microsoft visual studio 2010 tools for office runtime -x64-
Run an x64 Office application (e.g., Excel 64-bit). Then open Event Viewer → Windows Logs → Application. Filter for source VSTO 4.0 . Successful loading produces an informational event: When dealing with the x64 runtime, IT administrators
"The managed add-in [YourAddIn] was loaded successfully into the host process EXCEL.EXE (64-bit)." $userVsto = "$env:USERPROFILE\AppData\Local\Apps\2
This paper provides a detailed analysis of the Microsoft Visual Studio 2010 Tools for Office (VSTO) Runtime, specifically focusing on the x64 (64-bit) architecture. As a critical middleware component, the VSTO 2010 Runtime enables the execution of managed code extensions within Microsoft Office applications. This document explores the architectural shift from 32-bit to 64-bit Office environments, the role of the runtime in bridging the Common Language Runtime (CLR) and Component Object Model (COM), installation requirements, and the implications for modern software maintenance and security.
Check for the presence of the x64 loader:
C:\Program Files\Microsoft Visual Studio 10.0\VSTO Runtime\x64\VSTOLoader.dll
If VSTOLoader.dll is only found under the x86 subfolder, you have installed the 32-bit runtime.