Windows 10 build 9907 (fbl_ie)

Build of Windows 10
OS family
Timebomb2015-04-15 (+126 days)
Works in
Windows10-10.0.9907.fbl ie-Winver.png
TCB.png TCBGallery.png

Windows 10 build 9907 (fbl_ie) is a build of Windows 10. This build is available in the pseudo qps-ploc locale used to test the localization functionality. It's one of the few builds of Windows known to have pseudo-localization, the other one being Windows 8 build 8331 (fbl_loc).

Editions and keys[edit | edit source]

Edition / SKU Name Key
Core 334NH-RXG76-64THK-C7CKG-D3VPT
Professional (edition upgrade only) NKJFK-GPHP7-G8C3J-P6JXR-HQRJR
ProfessionalWMC (edition upgrade only) GBFNG-2X3TC-8R27F-RMKYB-JK7QT

Bugs[edit | edit source]

Timebomb[edit | edit source]

This build uses a test-signed certificate and as a result can be installed on the current date.

Installation[edit | edit source]

This build can only be installed on machines utilizing UEFI firmware since it hangs on a BIOS system.

Window thumbnail border color error[edit | edit source]

If window auto-colorization is enabled, the window thumbnail borders on the taskbar do not change color even after the wallpaper changes. This issue can be remedied by manually changing the window color through the Control Panel or restarting Windows.

Metro Apps[edit | edit source]

All metro apps except Store won't work after the installation.

Gallery[edit | edit source]