When I start a new project (or delete the .pro.user file) the kit selection always defaults to "Desktop Qt 6.4.1 GCC 64bit". I have several other newer, and older kits available to select, but I always have to deselect 6.4.1 and select the one I want like 6.6.1. Where is this old version stuck as default?
>Solution :
Just
- open Edit -> Preferences… ,
- choose Kits from the left,
- choose Kits tab,
- select the kit you want to make default from the list, and
- finally click Make Default button.