There seems to be a chicken and egg problem. As noted in the OP, Visual Studio will not recognize that QT has a version 6.anything. I cannot do the install that way.
Go to the reply from RLWA32-6355. When I try to manage the version, it requires a path to be entered in the dialog.
I cannot get it to install so I don't have the full path. So I cannot manage the version.
I visited a few places and installed Qt 6.2.4
A video says go to VS Extensions -> QT VS tools -> Qt Versions
That presents a dialog to add a version. There are no options to choose from, just a free form box.
OK, so enter 6.2.4
That is probably wrong. What is the correct value.
Next step is to add a path.
A path to what? What directory or file in the Qt install directory needs to be entered here?