Disconnect the internet during installation. Unreleased preview builds often trigger activation errors or attempt to download broken legacy updates that can cause boot loops.
The "Media Builder" scripts associated with this build are community-developed tools that automate the complex process of assembling an installable image from leaked files. The Windows 10 ARM32 Media Builder Review Overview: A Second Life for Abandoned Tech
The tool operates as an automated command-line console ( Build.cmd ) that uses the Windows Deployment Image Servicing and Management (DISM) engine to restructure the setup package. Windows 10 | Open Surface RT windows 10 build 15035 media builder
Every pre-release build has an expiration date. Build 15035 was set to expire in mid-2017. The Media Builder included a script that either extended the expiration by 10 years or removed the license polling mechanism entirely. This turned a temporary beta into a permanent OS.
Everything changed following a Microsoft data breach in early 2017. A rare internal copy of —the only known full client version of Windows 10 compiled for the ARMv7 architecture —was discovered. It leaked to the public via BetaArchive in November 2019, triggering an ongoing enthusiast effort to bring a modern operating system to legacy hardware. Disconnect the internet during installation
Deploying a leaked, half-finished operating system onto a heavily locked-down device with Secure Boot requires significant code modification. The (heavily attributed to community developer jwa4 ) functions as an automated deployment command center.
: While it supports some ARM32 applications (e.g., VLC), many modern browsers like Firefox for ARM32 are incompatible. Most Start menu tiles initially appear as invalid shortcuts until dependencies like .NET Framework 4.7 are properly configured. The Windows 10 ARM32 Media Builder Review Overview:
Windows 10 Build 15035 is an early 2017 development build belonging to the branch. Unlike modern Windows on ARM, which requires 64-bit processors (ARM64), Build 15035 was engineered to test cross-device functionality on legacy ARM32 silicon. Key Feature Specification OS Family Windows 10 (NT 10.0) Codename Creators Update (RS2 Release) Architecture ARM32 / ARMv7 Compilation Date February 9, 2017 Target Hardware