Had Inventor 2023 decide to no longer start.  Have uninstalled and reinstalled to no avail.  So now trying to uninstall everything and reinstall, stumbled on this gem.  What an absolute catastrophically bad design from Autodesk.  "You can't uninstall it but don't worry it will take of itself in a couple weeks..."  Really?  I suspect the goal is to make sure nobody is running software without paying licenses.  But this is not the way.