Windows 8.1 build 9431

Editions and keys Windows 8.1 build 9431 is the official Preview build of Windows 8.1, also known as the Milestone Preview. This build was released on 2013-06-26 with the occasion of the Build 2013 conference taking place. At the time of its release, it was possible to upgrade to this build from a Windows 8 copy by using the Windows Store or by downloading an ISO from TechNet or MSDN. The ISOs were made publicly available the day after, on 2013-06-27 in multiple languages, when the day 2 keynote started. There was also an ARM version of this build, but the only way you could obtain that version of the build was through the Microsoft Store.

User interface
This is the first leaked build to bring back the Start button. This was the first time ever since Windows 7.

SkyDrive
ultrawindows found some new interesting stuff in this build's SkyDrive client. Apart from the previous SkyDrivePagesTest, which work in all the avaliable builds, eight others exist in this build. That makes the complete list look like this: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\CameraRollDisabled HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\DisabledState HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\IsDomainAiccount HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\SkyDriveTest HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\MSAInterruptState HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\TotalSize HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\DisabledState HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\OtherSize HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\BackupSize HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\FileSize HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\SkyDrivePagesTest\ErrorState Also, this version includes a HKCU\Software\Microsoft\Windows\CurrentVersion\SkyDriveOptIn key with two values: Brand & OptIn choice. This implied there were plans for a SkyDrive subscription service at the time of this build. If you set Brand to 1, you get an even more interesting thing: the SkyDrive app will rebrand itself to Microsoft Drive, which showed the possibility of a name change (a result of the then recent BSkyB vs SkyDrive suit; the new name produced from the suit ended up being OneDrive).

Legacy F12 tools
If you want to get the old F12 tools back, just create/change these two DWORD's in the registry to 1: HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\EnableLegacyF12 HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FlipF12Shortcut

Media Center
You can get Media Center in this build. To get it, just copy this key: MBFBV-W3DP2-2MVKN-PJCQD-KKTF7 (from Windows 8 Release Preview) to the Add features dialog.

Photosynth
As in build 9385, it's possible to enable PhotoSynth mode in the camera app, which is disabled by default. Just follow these simple steps:

1. Download http://www.thecollectionbook.info/downloads/Win81639385CameraSettings.zip 2. Go to %localappdata%\Packages\Microsoft.MoCamera_cw5n1h2txyewy\Settings. 3. Replace the settings.dat with the downloaded one (backup if wanted). 4. Now when you launch the camera app, there should be a globe icon on the right, which activates the PhotoSynth mode.

Updates
Because 9431 was an official preview, it was getting support through Windows Update. Every update has its own gdr buildstring, and JaGoTu and AirportsFan managed to collect most of them. GDR binaries 6.3.9431.162 (winmain_bluemp_gdr.130619-1809)

6.3.9431.163 (winmain_bluemp_gdr.130620-1752)

6.3.9431.164 (winmain_bluemp_gdr.130621-1932)

6.3.9431.166 (winmain_bluemp_gdr.130624-1726)

6.3.9431.167 (winmain_bluemp_gdr.130625-1518)

6.3.9431.168 (winmain_bluemp_gdr.130626-1750)

6.3.9431.169 (winmain_bluemp_gdr.130627-1558)

6.3.9431.171 (winmain_bluemp_gdr.130702-1803)

6.3.9431.172 (winmain_bluemp_gdr.130703-2107)

6.3.9431.173 (winmain_bluemp_gdr.130708-1553)

6.3.9431.175 (winmain_bluemp_gdr.130710-1539)

6.3.9431.176 (winmain_bluemp_gdr.130711-1605)

6.3.9431.180 (winmain_bluemp_gdr.130716-1803)

6.3.9431.181 (winmain_bluemp_gdr.130717-1619)

6.3.9431.189 (winmain_bluemp_gdr.130728-1506)

6.3.9431.190 (winmain_bluemp_gdr.130730-1533)

6.3.9431.193 (winmain_bluemp_gdr.130806-1534)

6.3.9431.195 (winmain_bluemp_gdr.130812-1506)

6.3.9431.198 (winmain_bluemp_gdr.130815-1919)

6.3.9431.206 (winmain_bluemp_gdr.130901-1505)

6.3.9431.210 (winmain_bluemp_gdr.130916-1505)

6.3.9431.217 (winmain_bluemp_gdr.130929-1506) Some other versions were also pushed through Windows Update, but didn't contain full strings. GDR binaries without full strings: KB2863147: 6.3.9431.161

KB2867624: 6.3.9431.170

KB2876919: 6.3.9431.194

KB2847311: 6.3.9431.202