Windows 10 build 9924 (fbl cortana)

Build 9924 is a build of Windows 10. It was first showcased in a Windows 10 CP Press Conference on 2015-01-21. A Chinese IT news site has showcased this build in the article "Microsoft release meeting: Windows 10 system holographic projection technology Surface debut" on 2015-01-23, showcasing the notification center and Windows Phone aspects in the operating system.