This happens when your graphic card drivers do not support OpenGL 2.0 which is mandatory for Qt.Quick applications.
The first solution would be to upgrade your graphic card driver. You can also use OpenGL extensions Viewer [realtech-vr.com] to verify which OpenGL versions you support.
On the other hand, if you want to be able to deploy your apps to other Windows installations and do not want to have to ask users to update their drivers then you should not use the Qt5 build based on OpenGL but the ones based on ANGLE. Regretfully, since Qt 5.1, the Qt team stopped releasing versions of Qt with ANGLE and mingw. So you either need to recompile Qt yourself or use a version based on another compiler.
More information about Qt5 and Windows and ANGLE/OpenGL can be found here [qt-project.org]
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