It's probably not what you're initially thinking. If I go to Settings, and then Accounts, it shows my username as Adam (the name I want, so that is good). I am administrator by the way. If I go to File Explorer, open up my SSD (C: Drive), and Users, it shows me as "Local user". I seem to end up having frustrating permission problems, with being denied access, even though I am the only user. I want to change the "Local user" name to Adam (even if that doesn't solve the permissions problem, that is what this post is technically questioning).