Windows 8.1 build 9600.16581

6.3.9600.16581.winblues14_gdr_lean.131222-2030
Build of Windows 8.1
6.3.9600.16581.winblues14_gdr_lean.131222-2030
OS family
Architecturex64
Compiled2013-12-22
Timebomb
Works in
About
9600.16581-winver.png
SKUs
Pro

Windows 8.1 build 9600.16581 is a build of Windows 8.1 Update 1. The Brazilian Portugese version of this build was leaked on 4 January 2021 only in the x64 architecture. As of 2021, the English language version of this build remains unleaked.

History[edit | edit source]

Prior to this build's leak, 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[edit | edit source]

Bugs and quirks[edit | edit source]

  • In the Brazilian Portuguese leak, the Microsoft Confidential watermark uses pseudolocalized text.
  • Most update packages that a user installs on this build will cause the system to enter recovery mode.

Gallery[edit | edit source]

WZor.Net[edit | edit source]

CentrumWindows ▪ forum[edit | edit source]

References[edit | edit source]