If you’re searching for "Visual Studio Tools for Applications download," you’ve likely run into confusion. Unlike Visual Studio Community or VSTO (Visual Studio Tools for Office), VSTA is not a standalone product you download from Microsoft’s public website for general use.
If an application told you to “download VSTA,” reinstall that application’s “developer tools” or “scripting support” feature. If it still fails, contact the application vendor—not Microsoft. Need help identifying if a specific application uses VSTA? Reply with the app name, and I’ll point you to its official documentation. visual studio tools for applications download