: Qt 6.4 heavily relies on CMake. Ensure version 3.24 or later is installed and linked in the IDE settings.
: Navigate to the Archive section, filter for older versions, and select Qt Creator 6.4.x . 2. Archive Downloads qt creator 6.4 download
: Open Qt Creator and go to Edit > Preferences > Kits . Ensure your compilers (GCC, Clang, or MSVC) and Qt versions are correctly detected. : Qt 6
