QT += quick-studiocomponents
When Qt Creator (or your compiled application) looks for this module, it searches standard Qt paths (e.g., C:\Qt\6.5.0\mingw_64\qml\ ) and does not find it. Hence: "is not installed" . module qtquick.studio.components is not installed
import QtQuick.Controls 2.15
Before you panic, run through this checklist: QT += quick-studiocomponents When Qt Creator (or your