A Microsoft file hosting and synchronization service.
I'm having this Issue a few Days ago
I suspected in unauthorized Access attempts
So, I checked:
My Microsoft Account >>> Security >>> View my sign-in activity
I'm usually find Recent activity only under this Session Type title "Unsuccessful sign-in"
But now I'm noticing this "Automatic Sync" which refer to attempts for connecting the Account to an App. or Service that manages E-Mails, as the title Hint says
Below this title in it's Details:
"Type: Unsuccessful sync" & "Look unfamiliar?"
But when I tried Secure your account Link, I got this "Don’t worry. This sign-in attempt was unsuccessful, so there is no need to change your password"
These activities Type seems to be happening from a while, according to the Log history
But it started affecting the Files attribute just recently!
I think the Bug in this Scenario