HowTo Log off windows sessions remotely CLI

QUSER /SERVER:DC1
LOGOFF 1 /SERVER:DC1

http://aboutwinserver.com/general/get-log-off-users-rdp-using-cmd-tols/

LOGOFF [sessionname | sessionid] [/SERVER:servername] [/V] [/VM]
  sessionname         The name of the session.
  sessionid           The ID of the session.
  /SERVER:servername  Specifies the Remote Desktop server containing the user
                      session to log off (default is current).
  /V                  Displays information about the actions performed.
  /VM                 Logs off a session on server or within virtual machine. The unique ID of the session needs to be specified.

QUERY USER [username | sessionname | sessionid] [/SERVER:servername]

  username            Identifies the username.
  sessionname         Identifies the session named sessionname.
  sessionid           Identifies the session with ID sessionid.
  /SERVER:servername  The server to be queried (default is current).