Windows 8.1 build 9490

6.3.9490.0.winblue_rtm.130819-1515
Build of Windows 8.1
OS familyWindows NT
Version number6.3
Build number9490
Build revision0
Architecturex86
Build labwinblue_rtm
Compiled on2013-08-19
SKUs
Enterprise

Windows 8.1 build 9490 is an unleaked build of Windows 8.1. The build was mentioned in a Microsoft Support article titled How to disable the "Test mode" message that is displayed in Windows.[1]

Windows 8.1

Test mode Windows 8.1 build 9490

The Traditional Chinese x86 variant of this build was found on a Samsung XE700T1A prototype, although the contents of the eMMC containing it was completely irrecoverable,[2][3] save for a select few leftover binaries that were left intact after an upgrade to build 9491.

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