Windows 10 Build 9909 Jun 2026

Build 9909, however, was never meant to be a public-facing milestone. It was an internal "fbl_impressive" (FBL meaning Feature Build Lab) build, meaning it was where Microsoft tested radical, potentially unstable features. When it leaked, it broke the illusion that Windows 10’s development was linear.

More pages were moved from Control Panel, but the UI was less mature. The build had a mix of old/new dialogs. windows 10 build 9909

Build 9909 was part of the fbl_awesome1501 development branch, a specific lab where experimental features were tested before being merged into the main "winmain" releases. 10.0.9909.fbl_awesome1501.141213-2119 Compilation Date: December 13, 2014 Leak Date: January 29, 2015 (uploaded to BetaArchive ) Architecture: Available in x64 versions Major Features and Changes Build 9909, however, was never meant to be

While earlier previews experimented with a hybrid Start Menu, Build 9909 included an early version of the , which was enabled by default. This version of the menu allowed for more fluid animations and better integration of Live Tiles alongside the traditional app list. 3. Control Panel vs. Settings App More pages were moved from Control Panel, but