Windows Error 0x80240081 (Not Solved)

(Like many of my technology postings, this is really here for my own notes on problems I run into, the solutions I try and what works when. They are updated as I learn.)

10.18.17  Again an error during updates. 

Tried a SFC /SCANNOW to troubleshoot missing or corrupted system files on Windows .

a. Press Windows + X key and click Command Prompt (Admin).

b. Type the command: sfc /scannow and press Enter.

c. Restart the computer and check.

Didn’t work.