Assemblies used by newer solutions targeting .NET 4.0 and beyond. Technical Specifications and Requirements
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.
In the ecosystem of enterprise software development, few runtimes have maintained quiet relevance like the . Despite its vintage branding—suggesting a decade-old technology—this component remains a critical dependency for thousands of business-critical applications running on modern 64-bit Windows operating systems.
Install the Visual Studio Tools for Office Runtime Redistributable microsoft visual studio 2010 tools for office runtime -x64-
You are most likely to encounter this runtime when:
Navigate to the Windows Control Panel, find "Microsoft Visual Studio 2010 Tools for Office Runtime (x64)", right-click, and select Repair . Add-in Disappears / "Load Behavior: Unloaded"
Yes, but it is not recommended. The x64 installer places files in Program Files and 64-bit registry; the x86 installer uses Program Files (x86) and the WOW6432Node registry. However, if you have both, Windows will attempt to load the appropriate version based on the calling process (Office x86 uses x86 runtime; Office x64 uses x64 runtime). This works in theory, but causes clutter and occasional loader conflicts. Assemblies used by newer solutions targeting
: Microsoft's VSTO Runtime Overview explains architecture, 32-bit vs. 64-bit differences, and installation scenarios.
The runtime consists of three primary elements that manage how Office solutions are loaded and executed:
A supported version of (2013, 2016, 2019, 2021, or Office 365). 3. Installation and Deployment In the ecosystem of enterprise software development, few
Assemblies used by solutions targeting the .NET Framework 3.5.
The VSTO Runtime is a bridge between the Microsoft .NET Framework and the Microsoft Office suite. It consists of unmanaged loaders and managed assemblies that allow Office applications (like Excel, Word, and Outlook) to load and interact securely with custom code libraries. Why the x64 Version Matters