Windows 10 build 9901
| Build of Windows 10 | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 10.0 |
| Build number | 9901 |
| Build revision | 0 |
| Architecture | x64 |
| Build lab | winmain_prs |
| Compiled on | 2014-12-02 |
| Expiration date | |
| Timebomb | 2015-04-15 (+134 days) |
| About dialog | |
  | |
Windows 10 build 9901 is a build of Windows 10, which was uploaded to BetaArchive on 14 December 2014.
Editions and keys[edit | edit source]
| Edition / SKU Name | Key |
|---|---|
| Core | 334NH-RXG76-64THK-C7CKG-D3VPT |
| Professional | NKJFK-GPHP7-G8C3J-P6JXR-HQRJR |
| ProfessionalWMC (edition upgrade only) | GBFNG-2X3TC-8R27F-RMKYB-JK7QT |
| Enterprise | PBHCJ-Q2NYD-2PX34-T2TD6-233PK |
New features and changes[edit | edit source]
- Updated versions of Alarms, Calculator, Camera, Maps, Photos, Sound Recorder, and Windows Store have been included.
- Contact Support and Get Started apps have been added.
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
UseWin32TrayClockExperienceunder[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell] - Hidden lock screen - enabled by setting
Thresholdto 1 under[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\TestHooks] - Enable XAML Start menu - create and set
UseExperienceto 1 under[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell\Launcher] - New volume flyout - enable by setting
EnableMtcUvcto 1 under[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\MTCUVC]
Hidden apps[edit | edit source]
There are a few hidden apps in this build:
- Windows Default Lock Screen - accessed by running
C:\Windows\explorer.exe shell:AppsFolder\Microsoft.WindowsDefaultLockScreen_8wekyb3d8bbwe!LockApp - Cloud Experience Host - accessed by running
C:\Windows\explorer.exe shell:AppsFolder\Microsoft.CloudExperienceHost_8wekyb3d8bbwe!App - Print Dialog - accessed by running
C:\Windows\explorer.exe shell:AppsFolder\Windows.PrintDialog_cw5n1h2txyewy!Microsoft.Windows.PrintDialog - Windows Shell Experience Host - accessed by running
start-menu://test/
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[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.
Gallery[edit | edit source]
Boot screen
Desktop
Start menu
Settings app
Incorrect window thumbnail border color
