Unmanaged Client - Update Interval

Hi,

(Unmanaged, 14.MP1, Windows 10, setup was to get the updates from cloud (first option)) 

One of Cient PCwill not update until I press live update button (SEP sits on the existing definition for as many days).

What could be wrong here?, PC is always connected internet, How can I know the update interval of the same?

Or is there a script (some thing similar) to automate the same?

Thanks,