Automatically configures itself to match your Windows language setting and supports additional language packs for runtime messages.
While the VSTO Runtime is often bundled with Office, you may occasionally need a manual install or repair. You can find the standalone installer directly at the Microsoft Download Center Repairing: If an add-in stops working, go to Programs and Features , select the runtime, and click . The wizard will usually offer a option to fix corrupted files. Silent Install: microsoft visual studio 2010 tools for office runtime -x64-
The Ghost in the Office Machine: Why We Still Talk About VSTO 2010 go to Programs and Features