A kyb file extension is related to the keyboard layout settings files.
KYB file extension - Keyboard layout
What is kyb file? How to open kyb files?
File type specification:
The KYB file extension is sometimes used for files that contain saved keyboard layout setting files.
Most likely some old format without support from developer. No further information could be found.
This kyb file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.