Answers from Canon.
Dear Mr ten Kate,
Thank you for your feedback.
Unfortunately, we have to confirm that Canon indeed no longer makes codecs available to view a thumbnail of the RAW images in the Windows Explorer.
The codecs can therefore also not be downloaded or sent by e-mail.
For viewing RAW images, we only provide our software, Digitial Photo Professional.
We are very sorry not to be able to provide you with a solution.
If you have any further questions, please contact us by replying to this message.
Sincerely,
Canon Services & Support