Windows 8.1 build 9478

6.3.9478.0.winblue_rtm.130804-1505
Build of Windows 8.1
Screenshot
OS familyWindows NT
Version number6.3
Build number9478
Build revision0
ArchitectureARM32
Build labwinblue_rtm
Compiled on2013-08-04
Expiration date
Timebomb2014-01-15 (+164 days)
SKUs
CoreARM

Windows 8.1 build 9478 is an unleaked build of Windows 8.1. It is known that this build exists in the ARM32 architecture. Five screenshots of it were found on the Chinese website BetaWorld. American English version of this build was supposedly uploaded to the aforementioned website on 26 October 2019, followed by Spanish and French versions on 27 October,[1] but at the moment this cannot be confirmed or refuted as it is not publicly available. The Russian website PC Portal has also shown a screenshot with the build tag of this build.[2][3][4] This build is confirmed by a WinJS 2.0 string which originates from the Windows Store infrastructure.

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