[FIXED] How can I tell if someone else is logged into my Windows 10 PC?

Issue

Three or four times recently, I've tried shutting down my Windows 10 PC, only for it (mysteriously) to instead go back to the normal Windows login screen. And when I then try to shut the PC down from there, it (again mysteriously) warns me that this will shut down any connected users' sessions (but without giving any useful details).

All of which makes suspect (in a slightly paranoid, but probably justified way) that someone else might possibly now be logging in to my PC from time to time.

So: is there anything (i.e. application / trick / hack / whatever) I can use to find out / track who (or what) is currently (remotely) logged in to my Windows 10 PC?

Because I work from home, I guess it's conceivable that a client company's firewall / antivirus bot is doing something nasty (but legit) that I'm unaware of. But... I'd just like to know. Thanks!

Solution

Type query user in a command prompt. No need for elevation.

Answered By - Wisblade

Answer Checked By - Clifford M. (PHPFixing Volunteer)