"Windows 8.1 Pro Black Edition" is not an official product from Microsoft. It is a custom or "bootleg" version of Windows, created by third-party individuals. It is built upon the original Windows 8.1 Professional system. The main differentiators are its prominent black-colored user interface, with the modifier claiming to achieve a completely blacked-out aesthetic. It also includes additional features and modifications not present in the standard OS.
. Even "genuine" versions no longer receive security patches, making any Windows 8.1 installation inherently unsafe for internet-connected use. Microsoft Support Safe Alternatives Windows 8.1 Black Alien Edition - CrustyWindows 25 Nov 2022 — "Windows 8
A "Black Edition" is from Microsoft. Instead, it is a custom ISO file created by third-party modifiers. "Windows 8