None that I know of. I don’t do much customizing or tinkering which is why I was confused when the issue started a few years ago. I did try to troubleshoot for a while by resetting or deleting various config files I could find and nothing helped so I just found an alternative file manager that does what I need.
I would say unless you always want to do troubleshooting for this friend just stick him with windows. At some point it is up to the individual to be able to troubleshoot these issues using the Internet as the resource, but a lot of people just don’t want to mess with that. My own time is too limited to be on call for people.