Windows 10 build 9907 (fbl_awesome1501)

10.0.9907.0.fbl_awesome1501.141210-1857
	Build of Windows 10
OS family	Windows NT
Version number	10.0
Build number	9907
Build revision	0
Architecture	x86, x64
Build lab	fbl_awesome1501
Compiled on	2014-12-10
Expiration date
Timebomb	2015-04-15 (+126 days)
About dialog

Windows 10 build 9907 (fbl_awesome1501) is a build of Windows 10, which was shared online on 29 January 2015.^[1]

Editions and keys[edit | edit source]

Edition / SKU Name	Key
Core	334NH-RXG76-64THK-C7CKG-D3VPT
CoreSingleLanguage	2NCXJ-T36QP-HQMH2-9672W-WBYW3
CoreCountrySpecific	NQ4B7-4W72M-PV67K-QVRMF-QGH82
Professional	NKJFK-GPHP7-G8C3J-P6JXR-HQRJR
ProfessionalWMC (edition upgrade only)	GBFNG-2X3TC-8R27F-RMKYB-JK7QT
Enterprise	PBHCJ-Q2NYD-2PX34-T2TD6-233PK

Findings[edit | edit source]

Hidden features[edit | edit source]

The following hidden features have been found within this build:

New tray clock user interface - enabled by creating key UseWin32TrayClockExperience under [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell]
Hidden lock screen - enabled by setting Threshold to 1 under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\TestHooks]
Enable XAML Start menu - create and set UseExperience to 1 under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ImmersiveShell\Launcher]
New volume flyout - enable by setting EnableMtcUvc to 1 under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\MTCUVC]

Bugs[edit | edit source]

BIOS support[edit | edit source]

This build will only work on real hardware utilizing BIOS, unlike VMware which gives a CPU fault. On VMware, the user will need to use UEFI firmware.

Window thumbnail border color error[edit | edit source]

If window auto-colorization is enabled, the window thumbnail borders on the taskbar do not change color even after the wallpaper changes. This issue can be remedied by manually changing the window color through the Control Panel or restarting Windows.