Failure to install Windows 10 April Update(version 1803)

This is crazy. Obviously, I could reinstall Windows from scratch. I could also throw my computer off the top of a tall building. If, in fact, there is some class of computers that cannot tolerate the 1803 patch, reinstalling would do nothing but kill time.

I have a lot of applications. Some of them are upgrades of the "must find a previous version" sort. The last time I uninstalled one, I had to dig through my backups and reinstall a three-year-old version, then the one after that, and then the one after that. I'm getting old, and that's not how I want to spend what's left of my life.

They TRIED complete installs. But when it starts I lose remote command. Then it failed (twice) That's when they sent me to second level and he said it was not going to work on my desktop. That's also where HE didn't offer me any solution, I was the one who suggested can he set my computer to ignore that update. Which it has....SO far! I can only hope it was not a temporary solution.

Bottom line IT'S FIXED!!! I'm running 1803

The low point was that after the remote installation from ISO I lost some basics like the start options, notifications, and the ability to chat/request call back from Microsoft. Oh and still at 1709.

DSIM showed corrupted files.

Next day contacted Microsoft again from another PC (My reliable old Windows 7 machine) and we started again. This time I was passed to level 2.

After another failed attempt from ISO the LVL2 guy went for a full Windows 10 reinstall. 

I'm now reinstalling Office and other apps so it was quite disruptive. My files are still OK. and the apps are all in Windows.old.

I can't really say what the problem was but I watched the LVL2 guy search and find the word "rollback" in the log file. Just above that it was checking drivers. But i think I also had corrupted files from repeated failures to install. 

I should add that Microsoft remote support was involved with me for 6 hours elapse time yesterday and a further 6 hours today.

I would like to say thanks to the support guys but still feel the same way as before about the way Microsoft imposed this grief on me in the first place.

I just spent 5 hours with Microsoft support with them logged into my PC remotely.

It has just backed off the upgrade again and has restored windows 10 back to previous version (1709).

Have set metered connection back on to stop it trying again whilst I await the call back from Microsoft Support. How shall I word my reply???

I was told it by my Microsoft tech support - after several hours of trying to solve the problem remotely by him ...

:-(