Hi Xuewen, thanks for your message, I appreciate your letting me know about the new version of ArcGIS Earth.
I installed it yesterday, and unfortunately the installer once again changed my file associations for both KML and KMZ files, without my permission. This is not good app behavior. The installer should at least ask for my permission, or better yet let me select which file associations to change or not change.
That said, some things have improved. First, I was able to change my file associations back to my preferred KML software using the normal tools in Windows 10, and I did not have to edit some config file to do it. Also, after changing the associations back, they seem to remain set as I want them, even after restarting the app a few times. Hopefully it stays that way.
Hoping you can make future installers follow best practices, and ask permission to change file associations.
Thanks, -Chris