C++ – Can’t create plain C++ project in Qt creator – no valid kits found

Though OP is asking about Windows, this error also occurs on Ubuntu Linux and Google lists this result first when you search for the error"QtCreator: No valid kits found".

On Ubuntu this is solved by running:

For Qt5:

sudo apt-get install qt5-default

For Qt4:

sudo apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui

This question is answered here and here, though those entries are less SEO-friendly...

You should also have an appropriate compiled Qt library with Clang. There is no Clang build of Qt for Windows in the download page. So you have to prepare the build environment on your machine and compile the Qt source and then assign the qmake binary path in the "Qt version" field of your kit. Or simply use another compiler the Qt binary builds for which is already present at the download page.