Good Morning PeterJ,
Followed your instructions. As soon as I entered the command, a "Windows Update Standalone Installer" window appeared with the message "Searching for updates on this computer...". A few seconds later (maybe 50 or 60 seconds later) another window appeared with the message "The update KB4462923 is nothet installed on this computer." I clicked on the OK button on this latter window. At this point both windows closed, and the command prompt window did not contain any message.
Does this mean it could not find the Update, or does this mean that it actually removed it?
Edit: I checked in the "View update history" of the "Windows Update" and it seems KB4462923 was successfully installed on Oct 12, 2018. Not sure if this history list actually checks actual install changes, or if it simply checks a log and its giving me a "false positive".