You can check for an update and then install the update from the menu bar in Visual Studio. Save your work. Choose Help > Check for Updates. When the Update dialog box opens, choose Update Now. The update proceeds as described in the previous section, and then Visual Studio restarts after the update completes successfully.What are Visual Studio Tools?
Visual Studio Tools for Office (VSTO) is a set of development tools available in the form of a Visual Studio add-in (project templates) and a runtime that allows Microsoft Office 2003 and later versions of Office applications to host the .NET Framework Common Language Runtime (CLR) to expose their functionality via .NET.How do I update the Visual Studio installer?
Update by using the Visual Studio Installer Open the installer. On the Product page in the installer, look for the edition of Visual Studio that you have installed. If an update is available, you see an Update button.