Windows 10 build 9807

6.4.9807.0.fbl_partner_eeap.140803-0005
	Build of Windows 10
OS family	Windows NT
Version number	6.4
Build number	9807
Build revision	0
Architecture	x86, x64
Build lab	fbl_partner_eeap
Compiled on	2014-08-03
Expiration date
Timebomb	2015-02-15 (+196 days)
About dialog

Windows 10 build 9807 is a pre-Technical Preview build of Windows 10 originally released to Microsoft partners participating in the Ecosystem Engineering Access Program (EEAP) on 6 August 2014.^[1] The x86 compile of this build in the Simplified Chinese language variant was shared online on 17 May 2022. The x64 English compile of this build was later shared on 3 November 2024. It is the last known build to refer to itself as its predecessor.

Release notes for this build were posted several minutes after its upload, which further identified two previous EEAP releases.^[1] The SDK for this build identifies as the "Windows Software Development Kit for Windows 8.2" per this document.^[1]

Editions and keys[edit | edit source]

Edition / SKU Name	Key
Core	334NH-RXG76-64THK-C7CKG-D3VPT
Professional	XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB
ProfessionalWMC (edition upgrade only)	GBFNG-2X3TC-8R27F-RMKYB-JK7QT

Hidden features[edit | edit source]

Search[edit | edit source]

This build includes a nonfunctional Search utility, which is disabled by default. It can be enabled by merging the following registry setting and restarting File Explorer:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search]
"EnableProactive"=dword:00000001

Bugs and quirks[edit | edit source]

Timebomb[edit | edit source]

Like other builds found in the fbl_partner_eeap branch, this build uses a test-signed certificate and as a result can be installed on the current date. However, installing this build on the current date disables the ability to change the desktop wallpaper in the Control Panel.

Metro UI[edit | edit source]

Dragging a window in full-screen mode in Metro apps will result in Metro UI transitions from Windows 8.1.

Search icon on the taskbar[edit | edit source]

If the task view is enabled, the search icon on the taskbar will not be displayed correctly.

Control Panel[edit | edit source]

The System Properties page may incorrectly report the total amount of installed and usable RAM found on the machine.

Taskbar preview border color[edit | edit source]

If window auto-colorization is enabled, the taskbar preview borders do not change color even after the wallpaper changes. This issue can be remedied by manually changing the window color through the Control Panel or by restarting Windows.