It’s quite common to login as admin on windows though (in home setups), you’ll still have to authenticate for administrative tasks (the UAC popups).
The issue here is mostly that the user has probably upgraded and windows changed their account, resulting in the files being owned by their old account.
In linux, that’s fixable with ‘sudo chmod -R’
In Windows, there’s no built-in way, you need the take ownership script.
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Using the google algorithm, which by design includes related results, is probably the worst way to “prove” anything.