Windows 8 build 8128 (fbl_core1_soc_partner)

6.2.8128.0.fbl_core1_soc_partner.111005-1916
	Build of Windows 8
OS family	Windows NT
Version number	6.2
Build number	8128
Build revision	0
Architecture	x86, x64
Build lab	fbl_core1_soc_partner
Compiled on	2011-10-05
Expiration date
Timebomb	2012-10-01 (+362 days)
SKUs
	Developer Preview (Prerelease)
Product key
	6RH4V-HNTWC-JQKG8-RFR3R-36498
About dialog

Windows 8 build 8128 (fbl_core1_soc_partner) is a post-Developer Preview build of Windows 8, which was uploaded to BetaArchive on 4 January 2019. The original partner seed for the x64 checked/debug version was shared on 11 June 2022, including the SDK, WDK, Visual Studio 2010 Addons, and private symbols for this build.

New features and changes[edit | edit source]

Bugs and quirks[edit | edit source]

Compatibility[edit | edit source]

To install or run this build in VMware Workstation, the hardware compatibility version must be set to versions 8.x; otherwise, a garbled bugcheck will occur and setting hardware compatibility to version 9.x will cause a BAD_POOL_CALLER bugcheck to occur.

Windows Recovery Environment[edit | edit source]

This build's Windows Recovery Environment is broken:

It does not work when booted off from the installation media and does the following:
- On Legacy BIOS systems, it will launch the environment with some debug text, but will then be throwed back to the "Install now" page with the background being unchanged.
- On UEFI systems, it will cause the system to crash.
All recovery options except for Automatic Repair do not work when booted off from the system partition.

Hyper-V launch failure message[edit | edit source]

If the VMX extensions (in the case of Intel processors) or the SVM extensions (in the case of AMD processors) are not present or enabled in the BIOS options, the boot screen will display a Hyper-V launch failed message.