You should avoid downloading individual DLL files from third-party "DLL fixer" websites, as these often contain malware or outdated versions. Instead, use these official methods: 1. Install the Visual Studio 2010 Tools for Office Runtime
Users typically search for this keyword when they encounter the following issues:
Even though the version number says 2010, this is the official Microsoft "redistributable" package that contains the shared components needed for most Office add-ins to run. Go to the Official Microsoft Download Center. Download and run vstor_redist.exe . microsoftofficetoolscommonv90 download 2021
This component is part of the infrastructure that allows Microsoft Office to communicate with external code, particularly those developed in .NET environments. The "v90" suffix generally refers to the versioning linked to the Visual Studio 2008 era (Version 9.0), though it remains a legacy requirement for many third-party plugins still used in 2021 and beyond. Why You Might Need This Download
"The program can't start because microsoftofficetoolscommonv90 is missing." You should avoid downloading individual DLL files from
Running older business software on Windows 10 or Windows 11 that requires specific runtime environments. How to Safely "Download" and Install (2021 Guide)
Find your version of Microsoft Office (e.g., Microsoft 365, Office 2021). Click and then select Online Repair . 3. Update the .NET Framework Go to the Official Microsoft Download Center
This will register the necessary common tools and libraries on your system. 2. Repair Your Microsoft Office Installation
An Excel plugin or Outlook integration fails to load after an Office update.
If the file was corrupted during a Windows update, a built-in repair can restore it. Open > Programs and Features .