I had seen that but much of it was over my head. There is a suggestion there to open a VS Cross Tools command prompt but that fails saying that "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\Common7\Tools\vsdevcmd\ext" is not recognized as an internal or external command. That's not a command, it's a path so I don't know what it's trying to do. LOL
I was able to install OctoPrint on another computer that doesn't have Python or Visual Studio installed. That worked, so I assume there is a conflict on my main computer with Visual Studio itself or an older version of Python. I'm reluctant to arbitrarily start removing things without knowing what might be depending on them.