in command line:
c:schtasks /query |find /i "mcupdate"
ERROR: The task image is corrupt or has been tampered with.
ERROR: Task cannot be loaded: mcupdate

but /query /tn „mcupdate” nor /delete /tn „mcupdate” can not find the task.

as this task is not necessary:
c:del "%windir%System32TasksMicrosoftWindowsMedia Centermcupdate"