Legacy insider builds may have expired digital certificates.

Build 15035 is historically significant as the only leaked Windows 10 client build compatible with ARMv7 processors. It was originally compiled in early 2017 but only became publicly available via BetaArchive in late 2019. Target Devices: Primarily used for unofficial upgrades on Surface RT Media Creation:

Ensure the file architecture matches your target system (x64 or x86). windows 10 build 15035 media builder install

Click the prominent "Install Now" button in the center of the screen.

<?xml version="1.0" encoding="utf-8"?> <unattend xmlns="urn:schemas-microsoft-com:unattend"> <settings pass="windowsPE"> <component name="Microsoft-Windows-Setup" processorArchitecture="amd64"> <DiskConfiguration> <Disk wcm:action="add"> <CreatePartitions> <CreatePartition wcm:action="add"> <Order>1</Order> <Type>Primary</Type> <Size>100</Size> </CreatePartition> </CreatePartitions> </Disk> </DiskConfiguration> </component> </settings> </unattend> Legacy insider builds may have expired digital certificates

Click the button next to "Boot selection" and browse to the downloaded Windows 10 Build 15035 ISO file. Choose your Partition scheme :

A working Windows PC with local administrator privileges. Target Devices: Primarily used for unofficial upgrades on

If you want to explore or revive an old ARM tablet like a Surface RT, Build 15035 offers a unique (if imperfect) upgrade path. However, for a stable, secure, and fully supported modern computing experience, the standard version of Windows 10 or Windows 11, obtained via the official Microsoft Media Creation Tool, remains the undisputed best choice.