Thanks for your help. I already remove your suggested directory , as the list picture.But I still got the same issue. even if I copy cc1plus.exe to path of environment define. it seem don’t solve the issue.
hi @DomHsu, I found that your problem still exists, may you further test by uninstall your Arduino environment and clear all the leftover file/folder in Arduino15 after uninstalled the environment. Try to install back Arduino IDE and set all the Preferences back to before and test over again. Thanks.