Windows 8 build 8437 (winmain)

Build of Windows 8
OS familyWindows NT
Version number6.2
Build number8437
Build revision0
Build labwinmain
Compiled on2012-06-18
Expiration date
Timebomb2013-01-15 (+211 days)
RT (CoreARM)
About dialog

Windows 8 build 8437 (winmain) is a pre-RTM build of Windows 8, which was released to Microsoft partners through the Ecosystem Engineering Access Program (EEAP)[1] on 19 June 2012. A number of screenshots of this build were found on Chinese websites BetaWorld[2] and Coolapk.[3] It is only known to exist in the ARM architecture and was supposedly found on several Surface RT engineering samples, whose contents were later dumped and uploaded to the Chinese website BetaWorld on 30 September 2019.[2]

The signtool.exe binary from this build was first located within the 2022 NVIDIA source code leak. The Windows App Certification Kit for this build was later found in the provided image dump for its later fbl_dev_dp8 compile.

Gallery[edit | edit source]

BetaWorld screenshots[edit | edit source]

Coolapk photographs[edit | edit source]

References[edit | edit source]