I used the response from JCAyer's post on May 22, 2018 and it solved my problem. v.1803 upgrade.
When I say "upgrade" to v.1803, it really is a process of downloading a complete version of Windows 10 from MS, then installing it on my computer. It took nearly 5 hours, start to finish. Kept all my files and applications with no issues. Suggest you try that approach. Once the download completes, the Windows installer takes over and essentially overwrites the old OS.