The is a required framework that allows computers to run Microsoft Office-based solutions created with Visual Studio. The x64 version is specifically designed for 64-bit operating systems to support the integration and execution of custom Office add-ins and document-level customizations. Overview of VSTO Runtime
The is a mandatory software layer that must be present on any computer running an Office solution built with specific Microsoft Office developer tools in Visual Studio 2010 or later. Without it, your customized Office applications simply won't function.
The Microsoft Visual Studio 2010 Tools for Office Runtime -x64- offers several key features that make it an essential component for Office developers:
If you see it listed, your system is ready to run 64-bit Office add-ins. Troubleshooting Common Issues microsoft visual studio 2010 tools for office runtime -x64-
The VSTO Runtime follows the support lifecycle of its parent product (e.g., the version of Visual Studio or Office it was released with). For the most up-to-date versions available for download, the runtime generally follows the support lifecycle of the latest version of Microsoft Office available at its time of release.
You can download the standalone installer directly from the official Microsoft Download Center. The x64 version is typically packaged as vstor_redist.exe . Automated Deployment
Security is a core design feature of the Visual Studio 2010 Tools for Office Runtime. The runtime enforces strict validation policies to prevent malicious code from executing within corporate Office environments. The is a required framework that allows computers
The "2010" name is a legacy, but the technology it represents remains a workhorse in the Microsoft Office ecosystem, and understanding its x64 version is key to leveraging the full power of 64-bit computing in your Office applications.
A well-documented problem is an installation failure for a VSTO Runtime update (e.g., KB3001652) that results in a "Fatal error during installation" with a 0x80070643 error code. This error is a general Windows Installer error that indicates a corrupted or blocked state.
: It includes an unmanaged DLL (VSTOLoader.dll) that handles security checks and loads the appropriate solution assembly into its own application domain. Microsoft Learn Key Benefits & Performance Essential Stability Without it, your customized Office applications simply won't
$userVsto = "$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."
Assemblies used by solutions targeting the .NET Framework 3.5.