Windows 10 build 9883

6.4.9883.0.fbl_release.141106-1705
	Build of Windows 10
OS family	Windows NT
Version number	6.4
Build number	9883
Build revision	0
Architecture	x64
Build lab	fbl_release
Compiled on	2014-11-06
Expiration date
Timebomb	2015-04-15 (+160 days)
SKUs
	Core; Pro; Pro with Media Center (edition upgrade only)
About dialog

Windows 10 build 9883 is a build of Windows 10. The x64 Pro checked/debug compile of this build was originally uploaded to BetaArchive on 19 September 2015.^[1] The free compile containing both the Core and Pro SKUs, was later uploaded on 22 April 2022.

It is the last available build to use the 6.4 kernel version. The debug version of this build contains many development apps used to test the basic capabilities of what a Metro/UWP app can potentially do.

Changes[edit | edit source]

Settings[edit | edit source]

The PC Settings app has been renamed to Settings.
Most pages have been reorganized into new categories.
There are now separate pages for managing Wi-Fi, Ethernet, and VPN settings.
There is now a dedicated search box on the sidebar. However, the search charm will still open to show results.

Findings[edit | edit source]

Hidden features[edit | edit source]

The following hidden features have been found within this build:

Hidden lock screen - enabled by setting Threshold to 1 under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\TestHooks] in the registry like in build 9845.
Enable XAML Start menu - create and set UseExperience to 1 under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ImmersiveShell\Launcher]
Search box on the taskbar - enabled by setting EnableSearchBox to 1 under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Search

Bugs and quirks[edit | edit source]

Metro applications[edit | edit source]

This build's Metro applications are known to be unstable, notable problems include a memory leak in the Settings app and most developer apps not working correctly.

Desktop Window Manager[edit | edit source]

Desktop Window Manager in this build is missing some newer window animations that were introduced in build 9860 and build 9879 despite having a later compile date.

Shutdown crash[edit | edit source]

There is a chance of the system crashing when shutting down.

Installation[edit | edit source]

The Debug version of this build is not installable by default due to a corrupt msi.dll file in the install.wim. To install this build, apply the xdelta patch provided to restore the proper msi.dll file.

Incorrect 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.