ive update failed to complete due to downloads failure to complete

I This is a Win 10 machine. I ran the diagnostic routine after getting a failure to complete. The diagnostic routine found and fixed one item. I rebooted from a cold boot. I re-ran Live Update and got the same message. I re-ran the diagnostics, and noting was found. So I re-ran Live Update and got the same results. Any good ideas as to fixing Norton AntiVirus?