Windows 10 build 15035

Windows 10 build 15035 is a build of Windows 10 Creators Update. It was leaked to BetaArchive on 2019-11-24, although it is known to have been in private circulation since early 2017. This build is currently notable to be the only leaked Windows 10 client build available for ARM (ARMv7) processors. It is possible to run this build under QEMU as well as on various devices that originally shipped with Windows RT or Windows 10 Mobile if the appropriate drivers are available and Secure Boot can be disabled. Although this build is not suitable for daily use, it has attracted some interest from the remaining users of ARM (ARMv7) devices as an unofficial upgrade from Windows RT or as a replacement for Windows 10 Mobile.

Applications
This build omits certain apps that were either not available for ARM (ARMv7) processors at the time or were simply excluded from the build for other reasons. Although the included apps are limited there are numerous additional apps still available as well as updates for the preinstalled apps that are compatible with this build.

Although it is possible to install to the Microsoft Store it will only function to install updates for apps that are manually installed or apps already purchased and available on the users account, the purchase and installation of new apps directly from the store on this build does not work. The lists below detail the preinstalled versions and the latest versions of various Microsoft apps that will work with this build.

Additional software

 * Internet Explorer 11 is not installed or included in the Windows image as a Feature on Demand package by default however it is available as a separate optional package on the installation media in  which can be installed by running the command below:
 * This build supports all versions of Office 2013 RT which were previously included with Windows RT, if installed on this build Windows Update will work to provide any available updates for Office 2013 RT.

Bugs
This build contains a few notable bugs:


 * The User Account Control user interface is broken, leading to issues starting programs requiring administrative privileges. Disabling UAC using the registry is mandatory to run these programs, this can be achieved by applying the registry entry below:
 * Cameras will not work even with the appropriate app and drivers installed on Surface RT devices due a missing registry entry, this can be resolved by applying the registry entry below:
 * Using Event Viewer or Task Scheduler causes a BSOD error (PANIC_STACK_SWITCH), this only occurs after either one is opened and you attempt to view an entry other than the one selected by default or otherwise interacting with the UI on those windows. One report indicates this is caused by NTFS.sys crashing.
 * Opening Disk Management can occasionally cause a BSOD error (PANIC_STACK_SWITCH).
 * On some devices the Screen Brightness setting does not persist after a reboot and Automatic Brightness might not function correctly.
 * On some devices Night Mode may not always function correctly.
 * The legacy Windows Defender UI (MSASCui.exe) is not functional and will terminate with a critical error (0x800b0101) due to its certificate being outside of the validity period, the executable will only launch properly if the system date is set between 2016-08-11 and 2017-05-15.
 * The background color for windows is gray instead of white.

Compatibility

 * This build technically does not support NVIDIA Tegra processors, like the ones found in the Surface RT and Surface RT 2. The sdbus driver, responsible for providing an interface layer with the eMMC dropped support for the NVIDIA storage controller during Windows 10 development. You can however replace the driver with the one from Windows RT 8.1 build 9600.16384 to make the build boot on Surface tablets. On the Surface RT 2 (may also apply to Surface RT), using a version of sdbus newer than 9600.16384 will conflict with the nvpep driver causing a BSOD error (IRQL_NOT_LESS_OR_EQUAL) on boot. Later versions of the Surface RT 2 USB recovery media in particular may contain version 9600.16497 of sdbus driver which will trigger the error.
 * This build does not support legacy touch drivers built for Windows 8 RTM. Loading these drivers will cause the OS to register touch inputs in the top left corner of the screen.
 * This build does not support the Nokia Lumia 2520 Qualcomm Power Engine Plugin driver. Loading a newer driver for the Snapdragon 800 is mandatory.
 * The bootarm from this build would disable a previously applied Secure Boot unlock and prevent the build form booting, this can be avoided by using the bootarm from Windows RT 8.1 build 9600.

Miscellaneous

 * Neither Microsoft Print To PDF or Microsoft XPS Document Writer is available after installation due to the respective certificates being outside of the validity period. As any device this build is installed on will be in Test Mode both of these drivers can be manually installed from  and overriding the Driver Signature Enforcement Check when prompted.

Restrictions
Although it is not an edition of Windows RT, this build has inherited some of the restrictions present in Windows RT. When certain Windows RT restrictions were established they were applied not by SKU but were instead applied to a specific architecture, in this case ARM (ARMv7). Issues known to be caused by this are:


 * User defined start-up programs are not available.