Windows 10 build 9841

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6.4.9841.fbl_release.140912-1613
Build of Windows 10
6.4.9841.fbl_release.140912-1613
OS family
Architecturex86, x64
Compiled2014-09-12
Timebomb2015-04-15 (+215 days)
Works in
About
Windows10-6.4.9841-About.png
SKUs
Core
Pro
Enterprise
Pro with Media Center (identifies itself as Windows 8.1 Pro with Media Center)
Key
TP: NKJFK-GPHP7-G8C3J-P6JXR-HQRJR
Consumer: 334NH-RXG76-64THK-C7CKG-D3VPT
Enterprise: PBHCJ-Q2NYD-2PX34-T2TD6-233PK
TCB.png TCBGallery.png

Windows 10 build 9841 is a build of Windows 10. It was demonstrated by Microsoft on 30 September 2014 at a closed press conference and released as a Technical Preview the next day, on 1 October 2014.

It is the first publicly available build of Windows 10, released to users who joined the Windows Insider program.

Bugs and leftovers[edit | edit source]

Installation[edit | edit source]

If you're installing this build, you must either change the host PC's time to the BIOS date time listed (September 13, 2014) for the case of virtual machines or turn off all network adapters even if you turned off the time sync and set the BIOS date for the machine, otherwise after the hardware setup it will automatically adjust to the current time via online time syncing and activate the timebomb, instantly breaking the build and the bootloader.

Media Center[edit | edit source]

If you add Windows Media Center to this build using a purchased Windows 8.1 product key, the system subsequently identifies itself as running "Windows 8.1 Pro with Media Center", along with a warning that the OS has not been activated.[1]

Gallery[edit | edit source]

References[edit | edit source]