FF FE

Windows Registry file / UTF-32-UCS-2 file

category: file-signature
normalized: fffe
confirmed: 2026-03-15
lookups: 3
source: https://www.garykessler.net/

Windows Registry file; UTF-32-UCS-2 file. File extension(s): REG. Kessler type: Windows.

Similar magic numbers

value	name	category
FF FF FF FF	DOS system driver	file-signature
FF FE 00 00	UTF-32-UCS-4 file	file-signature
FF F1	MPEG-4 AAC audio	file-signature
FF F9	MPEG-2 AAC audio	file-signature
FF	Windows executable	file-signature