If the error appears when launching a specific legacy tool, ignoring it will crash that tool. If it appears during boot or Windows Update, you can safely ignore it, but the cleaner solution is to install the VC++ 2008 redistributable.
Crucially, you must have the installed. The VSTO Runtime is compatible with .NET Framework versions 3.5, 4, 4 Client Profile, or 4.5. If you're running a modern Windows 10 or 11 system, the .NET Framework 4.x is likely already present.
<Configuration> <Add OfficeClientEdition="64" Channel="PerpetualVL2021"> <Product ID="ProPlus2021Volume" PIDKEY="YOUR-KEY-HERE"> <Language ID="en-us" /> </Product> </Add> </Configuration>
The spikes in search volume for a "2021 download" version of this legacy file typically trace back to two environments: 1. The .NET Framework Security Rollups microsoftofficetoolscommonv90 download 2021
Since v90 refers to Visual C++ 9.0, installing the official redistributable will install common tools and DLLs required, including the missing microsoftofficetoolscommonv90 component.
Install the MSI package to automatically register the correct microsoftofficetoolscommon paths in your Windows Global Assembly Cache (GAC). Method 3: Use Visual Studio Installer (For Developers)
The term microsoftofficetoolscommonv90 does not correspond to any official Microsoft product or update released in 2021. It appears to be a , possibly related to: If the error appears when launching a specific
. This DLL is required for running Office solutions created with older versions of Visual Studio. Stack Overflow How to Download & Install (2021/Current)
Do not fall for fake DLL download sites. Microsoft has made all legacy runtime libraries available for free and legally. By following the steps in this guide, you will resolve the error, restore full functionality to your Office tools, and protect your system from potential malware.
Click the three dots (or select modify) and choose or Modify . The VSTO Runtime is compatible with
The demand for Microsoft Office Tools Common v9.0 has increased significantly in 2021, driven by several factors:
: Provides the foundation class ( Microsoft.Office.Tools.AddIn ) required to run extensions smoothly inside Word, Excel, and Outlook.
Given the technical nature of the file, it's worth clarifying if you might have been looking for something more common but typed a similar term.