Windows 10 build 9924 (fbl cortana)

Windows 10 build 9924 (fbl cortana) is a build of Windows 10. It was first showcased in a Windows 10 CP press conference on January 21, 2015. A Chinese IT news site had showcased this build in the article "Microsoft release meeting: Windows 10 system holographic projection technology Surface debut" on January 23, 2015, showcasing the notification center and Windows Phone aspects in the operating system. It was also demonstrated in Microsoft's video "How Cortana Comes to Life in Windows 10" to show how Cortana is capable of performing many user tasks. Builds 9926 and 10011 were also demonstrated in the same video.