Windows is microsoft's fastest, most efficient operating system to date, offering quicker application start up, built-in diagnostics, automatic recovery, improved security, and enhanced searching and organizing capabilities.

Windows 10 offers cut-off date support, the most powerful ye t intuitive security system to date, and most of all a balanced interface which is equally friendly to desktop and laptops as well as tablets and touch devices.

24 years, i believe is the correct answer.