Macbook keeps asking to sign in to old deleted icloud account
I often find myself working away on a document, and an alert arrives asking me to sign in to an icloud account that was deleted years ago. I just close the box, but I wonder how this is even possible. It is an icloud account from a previous user! When I took over this macbook we scrubbed it clean! How is the old owners info even on this machine? Also, I have turned all updates off, but wake up in the morning with updates installing. I have ran high level security scans on my macbook and it's clean. Or is it?
MacBook Air 13″, macOS 11.6