Windows 10 build 9883

Windows 10 build 9883 is a build of Windows 10, the debug version of which was originally uploaded to BetaArchive on 19 September 2015 under the Pro SKU only. The Free version of this build, which contains both the Core and Professional SKUs, was later joint-leaked to the BetaWiki Discord server 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

 * First indications of the Control Panel → PC settings merger started to appear in this build.

Hidden Features

 * Hidden lock screen - enabled by setting  to 1 under   in the registry like in build 9926.
 * Search box on the taskbar - enabled by setting  to 1 under

Metro applications
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
DWM in this build is missing the newer window animations that were introduced in build 9860 and build 9879 despite having a later compile date.

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

Installation
The Debug version of this build is not installable by default due to a corrupt  file in the. To install this build, install the xdelta patch provided and apply it to the ISO image.

Incorrect window thumbnail border color
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.