Configuring a Computer to Develop Office Solutions
To create VSTO Add-ins and customizations for Microsoft Office, install a supported version of Visual Studio, the .NET Framework, and Microsoft Office.
Visual Basic for Applications (VBA) must be installed as part of Office.
For detailed installation steps, see How to: Configure a Computer to Develop Office Solutions.
If you install a supported version of Visual Studio, the .NET Framework, and Microsoft Office, but Office project templates either don’t appear in the Visual Studio New Project dialog box, or you receive an error when you try to use one, check the following:
Ensure that you have the Microsoft Office developer tools installed on your computer.
Office developer tools are an optional component of Visual Studio, but they are usually installed automatically along with Visual Studio. If you customize the Visual Studio installation by specifying which features to install, make sure that you choose Microsoft Office Developer Tools during setup to install the tools.
To ensure that these tools are installed, start the Visual Studio setup program, and choose the Modify button. Select the Microsoft Office Developer Tools check box, and then choose the Update button.
Ensure that you're not running a version of Office that was delivered by Click-to-Run. See How to: Verify Whether Outlook Is a Click-to-Run Application on a Computer.
Ensure that you’re running only one version of Microsoft Office.
If you continue to experience problems, see Additional Support for Errors in Office Solutions.