Windows 8 build 8133 (fbl grfx dev1)

Windows 8 build 8133 (fbl_grfx_dev1) is a build of Windows 8. This build was leaked on 31 December 2019.

As of 2021, it is the earliest leaked build to use the new version of Segoe UI font that would be used in later build through the final version.

Hardware compatibility
It is recommended to set the hardware compatibility to version 9.x on VMware, otherwise booting from setup will result in a garbled black screen.