Do not download the .dll file individually from "DLL download" websites. These files are often outdated, incorrect, or may contain malware. You should install the official Microsoft Runtime package, which includes this file.

Ensure no legacy Office tools (e.g., Office 2010 components) are conflicting with the 2021 common tools. 5. Security Considerations The 2021 update for shared tools includes:

If you search for "MicrosoftOfficeToolsCommonv90 download," you will likely find third-party websites offering a direct .dll file download.