The VSTO Runtime is a redistributable package that allows modern Office versions to execute code written in Visual Studio. It provides the necessary libraries to manage the communication between the Office application and the .NET Framework. Without this runtime, managed add-ins will fail to load, often resulting in silent failures or specific error messages during the application startup. Key Benefits of the Runtime

If you follow this, your Office add-ins should spring back to life!

| Runtime | Best for | |---------|----------| | | Office 2007/2010/2013 solutions | | VSTO 2013 Runtime | Office 2013+ solutions with .NET 4.5+ | | Office Add-ins (web tech) | Cross-platform, modern Office.js add-ins (no VSTO required) |

While the name suggests this is a tool for programmers, it is actually a common requirement for many everyday Windows applications. If you are seeing an error message about "VSTO" or your Excel/Word add-in won't load, this guide is for you.

On this page, you will see two main files. Usually, you should download the vstor_redist.exe (which detects your system), but if you are doing a specific repair install, pay attention to the file names:

Before initiating the download, ensure your system meets the following criteria:

Microsoft Visual Studio 2010 Tools For Office Runtime Download |best| -

The VSTO Runtime is a redistributable package that allows modern Office versions to execute code written in Visual Studio. It provides the necessary libraries to manage the communication between the Office application and the .NET Framework. Without this runtime, managed add-ins will fail to load, often resulting in silent failures or specific error messages during the application startup. Key Benefits of the Runtime

If you follow this, your Office add-ins should spring back to life! The VSTO Runtime is a redistributable package that

| Runtime | Best for | |---------|----------| | | Office 2007/2010/2013 solutions | | VSTO 2013 Runtime | Office 2013+ solutions with .NET 4.5+ | | Office Add-ins (web tech) | Cross-platform, modern Office.js add-ins (no VSTO required) | Key Benefits of the Runtime If you follow

While the name suggests this is a tool for programmers, it is actually a common requirement for many everyday Windows applications. If you are seeing an error message about "VSTO" or your Excel/Word add-in won't load, this guide is for you. On this page, you will see two main files

On this page, you will see two main files. Usually, you should download the vstor_redist.exe (which detects your system), but if you are doing a specific repair install, pay attention to the file names:

Before initiating the download, ensure your system meets the following criteria: