One of the computers that is giving me fits is a stock Gateway from about five years ago. The other is a custom rig that is under two years old. The upgrade troubleshooter shot nothing, and the upgrade assistant was of no assistance.
I, too, had Microsoft remotely control my machine and tell it to hide the update. That didn't seem to last, however. It started trying to install that update several weeks later.
I did find an option to freeze update installation for 35 days. I'll need to keep an eye on that.
Soooo glad that I finally decided to block 1803 in June using metered connection option .
Unless Microsoft publicaly admit there is a problem, and give a formal solution then I am staying at 1709. Although actually, my Win 10 machine is now gathering dust. This update from my Windows 7 machine.