Why are software updates necessary?

Microsoft is committed to providing its customers with software that has been tested for safety and security. Although no system is completely secure, we use processes, technology, and several specially focused teams to investigate, fix, and learn from security issues to help us meet this goal and to provide guidance to customers on how to help protect their PCs.

As part of the Microsoft software release process, all software released to the Download Center is scanned for malware before it is made available for public download. Additionally, after release, the software available from the Download Center is routinely scanned for malware. Microsoft recognizes that the threat environment is constantly changing and will continue to evolve over time, and we are committed to process improvements that will help protect our customers from malware threats