Windows 8.1 build 9600.16581
| Build of Windows 8.1 | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 6.3 |
| Build number | 9600 |
| Build revision | 16581 |
| Architecture | x64 |
| Build lab | winblues14_gdr_lean |
| Compiled on | 2013-12-22 |
| SKUs | |
| Pro | |
| About dialog | |
Windows 8.1 build 9600.16581 is the earliest available build of Windows 8.1 Update 1, which was shared on 4 January 2021 only in the Brazilian Portuguese language for the x64 architecture. As of 2024, the English language version of this build remains to be found.
Prior to being shared, Russian website WZor.Net released an article describing the build in question on 8 January 2014, where seven images of its English language version were posted alongside others on Twitter.[1] On 13 January, another screenshot of this build was posted on the Polish language CentrumWindows forum.[2]
New features and changes[edit | edit source]
Internet Explorer 11[edit | edit source]
- Internet Explorer has been updated to version 11.0.2.
- The "Tabs" button has been added to Metro IE.
Bugs and quirks[edit | edit source]
Localization[edit | edit source]
- The Microsoft Confidential watermark uses pseudolocalized text.
- Certain aspects of this build (such as Metro apps) are not localized and therefore using their English (United States) string resource counterparts, despite the English version of this build is unleaked.
Update packages[edit | edit source]
- Most update packages that a user installs on this build will cause the system to enter recovery mode.
Gallery[edit | edit source]
Brazilian Portuguese version[edit | edit source]
About Internet Explorer
Tabs button in Metro IE
All apps
System Properties
[edit | edit source]
WZor.Net[edit | edit source]
OOBE
Desktop with winver
Registry Editor
EULA
Personalization
System properties
About Internet Explorer 11
Start screen
Applications
CentrumWindows ▪ forum[edit | edit source]
System properties
