I’ve played with this a little and found that the gesture you’re referring to sends win key and D as an input. There is a registry key you can add to disable win key shortcuts individually; if you don’t use Win-D, you can disable it and stop it happening.
- Using regedit, go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\.
- Add an expandable String Value named ‘DisabledHotkeys’
- Simply add the shortcuts you don’t want (for this purpose, ‘D’) in there, and reboot.
The touchpad won’t minimize with a swipe anymore, but obviously the shortcut will be gone too. If that’s okay with you, there’s your answer.
Hope this helped somebody, anyway.
E: Had a look around and just want to clarify; this solution doesn’t disable the windows key entirely, and all of the other win+[key] shortcuts will keep working. It also doesn’t require third party software or scripts.