Twice I have tried enabling OneDrive on my Windows 10 laptop. Both times, once I signed into OneDrive with my Microsoft account, it "grabbed" or displayed files from my son's laptop as if they were mine. For instance, all of a sudden, I had his desktop & mine mingled together. And other stuff. Very disconcerting at first, but when I sign out of OneDrive, it all goes away.
We both have Windows 10 laptops. I am logged into Windows on my PC using my Microsoft account, and he is logged into Windows on his PC using his Microsoft account. I have confirmed this by looking at "Your Info" under account settings.
(It is possible that his original Windows installation was initially linked to my account, but I don't know if that's causing the problem, or how to fix it.)
Also, he is a child in my Microsoft "family", would that somehow cause this?
Thanks,
Kelly