As of Titanium 9.0.0, building Windows apps is no longer supported.
Support for Windows 8.1 and Windows Phone SDKs has been deprecated as of SDK 6.3.0.GA and has be removed in SDK 7.0.0.GA.
To develop an Windows-based Module, you'll need all of the software required to build a Titanium application for Windows:
- Titanium SDK
- Supported versions of Visual Studio and the Windows Phone SDK, as described in Installing the Windows Phone SDK
- Studio or the Appcelerator Command-Line Interface (CLI) for creating modules, and building and running test applications
Like Windows application development, Windows module development is only supported on Windows.