Microsoft Office becomes increasingly large and complex, as well as its build system. The complex and unique build system for Office is constantly perfecting. Because the variety of software products the build system and process also very different. But all the company has the same goal: to make quality software. For large and with long release lifecycle project the build process is even more important. My project is especially under Microsoft Office Build System. And improve the feedback mechanism to report build break to developers, which can reduce builder workload, saving time, and sent useful message to the correspond developer. Whether a build system can give effective feedback is essential for improving the software quality.