Windows 8.1 build 9299

6.2.9299.0.fbl_partner_out06.130117-1707
	Build of Windows 8.1
OS family	Windows NT
Version number	6.2
Build number	9299
Build revision	0
Architecture	x64
Build lab	fbl_partner_out06
Compiled on	2013-01-17
Expiration date
Timebomb	2014-01-15 (+363 days)
About dialog

Windows 8.1 build 9299 is the sixth partner release build of Windows 8.1, which was uploaded to BetaArchive on 30 March 2019.

Editions and keys[edit | edit source]

Edition / SKU Name	Key
Core	2H7NK-3VJJY-HHY3Y-WM3T8-JFCRY
Professional	MTWNQ-CKDHJ-3HXW9-Q2PFX-WB2HQ
ProfessionalWMC	MBFBV-W3DP2-2MVKN-PJCQD-KKTF7

New features and changes[edit | edit source]

Hyper-V Generation 2 virtual machines[edit | edit source]

Preliminary support for Hyper-V Generation 2 virtual machines, which utilize UEFI firmware in place of legacy BIOS, include support for the Secure Boot protocol and virtual Trusted Platform Modules, has been implemented, although the underlying work is largely unstable; possibly because the implementation itself has not been advanced further yet at this point or likely due to the hypervisor hitting an assertion failure (as the operating system was compiled under a debug release type).

In this build, generations are internally referred to as "types", and there is no graphical user interface present for creating such virtual machines. A Generation 2 virtual machine can be created by utilizing the below sample PowerShell commandlet, which sets the virtual machine's memory to 2 gigabytes, creates and uses a 32-gigabyte VHDX disk image, and sets the generation to "Type 2":

New-VM -Name "Type 2 VM" -MemoryStartupBytes 2GB -NewVHDPath "X:\Path\To\VHDX\Image.vhdx" -NewVHDSizeBytes 32GB -Type Type2

Slideshow[edit | edit source]

This build contains a new slideshow animation for the lock screen, which simply fades between multiple images (located in the %windir%\Web\Slideshow directory) across a several second delay. It can be enabled by merging the below registry value:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lock Screen]
"SlideshowEnabled"=dword:00000001

Miscellaneous[edit | edit source]

Setup environment's borders have been enlarged.

Bugs[edit | edit source]

Blank screen on boot[edit | edit source]

This build often boots up to a blank screen after logging in, instead of loading the start screen directly. Pressing the ⊞ Win Key can load the start screen and allow the user to continue.

Windows Recovery Environment[edit | edit source]

The Windows Recovery Environment user interface will crash while attempting to load the initial boot options menu page, in turn causing unexpected restarts.