Windows 7 build 6910

6.1.6910.0.winmain.080915-1555
	Build of Windows 7
OS family	Windows NT
Version number	6.1
Build number	6910
Build revision	0
Architecture	x64
Build lab	winmain
Compiled on	2008-09-15
Expiration date
Timebomb	2009-07-01 (+289 days)
SKUs
	Home Basic (N); Home Premium; Business (N); Ultimate;
About dialog

Windows 7 build 6910 is a pre-beta build of Windows 7, which was shared by BetaArchive user marcoguy on 19 December 2016.^[1]

New features and changes[edit | edit source]

User interface[edit | edit source]

The design of the Start button has been slightly changed to no longer include a slight bevel around it. The Quick Launch bar has been disabled by default, and it is now possible to transfer files between computers over Bluetooth.

Branding[edit | edit source]

The default wallpaper has been replaced by a betta fish (in itself, a pun on the word "beta") puffing out seven bubbles.

Windows Recovery Environment[edit | edit source]

The Windows Boot Manager will now automatically run the configured Windows Recovery Environment boot entry (with an additional flag set to invoke Startup Repair) in the event of a repeated boot failure.

Bugs and quirks[edit | edit source]

Appearance and Personalization[edit | edit source]

When switching between Aero themes, the "tada" sound effect will get cut off.
The icons for Windows Classic and High Contrast themes don't display properly.
The Windows Classic theme uses thicker borders by default.

Places bar[edit | edit source]

The places bar of the legacy Common File Dialog from Windows 2000 and Windows XP, which was originally introduced in Windows 95 without the bar, appears to be disabled by default, but the state of the NoPlacesBar DWORD in HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Comdlg32 and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Comdlg32 or the "Hide the common dialog places bar" group policy in either User Configuration > Administrative Templates > Windows Components > Windows Explorer > Common Open File Dialog or Computer Configuration > Administrative Templates > Windows Components > Windows Explorer > Common Open File Dialog has not yet been verified. The Group Policy description mentions old WordPad as an example.

Upgrade from earlier builds[edit | edit source]

Setup will encounter an error at the "Installing features and updates" stage when upgrading from an older Build (specifically Build 6608). The upgrade fails with the error message:

"This version of Windows cannot be installed to this computer. One or more disk volumes were formatted in an incompatible way by a newer version of Windows. To resolve this issue, boot to the system that formatted these volumes and run this command from an elevated command prompt: writelog -disable <drive>:"

There is only one way to overcome this error, which is to replace the entire installer file (except install.wim) to a newer build or equal to Build 6936. Upgrades from newer builds are not affected by this error.