Notes about the KES file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The KES file type is primarily associated with 'Kurzweil' by Kurzweil Educational Systems, Inc.. Kurzweil 1000 is a scanning and reading solution for the blind or visually impaired. Kurzweil 3000 is a scanning, reading and writing solution for people with learning disabilities or reading difficulties. The KES file is a compound document, containing text, full-page images, links, notes, and often audio.