Here's an update - my previous suggestion to change the registry seems to have resulted in compromising Windows in it's ability to function correctly when attempting Windows Updates. Eventually, I ended up having to reinstall Windows.

I concur with moving the location of the Folders, as is suggested above, and I apologize to anyone who may have gotten into trouble if they followed my approach.

Ref: https://answers.microsoft.com/en-us/windows/forum/all/windows-updates-and-upgrade-fail-version-1703/989346a4-ac43-4293-b17f-4aa8de247109