Have a few updates left that keeps failing, error 800B0100

Nope - I have no idea where they came from, or what they do.

Sorry - I should have phrased my earlier response better....
If the C:\windows\Temp\CheckSUR folder doesn't exist, then create it and the Servicing and Winsxs folders, and copy the folders from the download into the respective one.

Wooops! - I missed a couple

Back in a jiffy...

I've uploaded a file - jsrab.zip - to my OneDrive at Noel's OneDrive
Please download and save it.
Right-click on the downloaded file, and select Extract all…
Extract to the default location - which will create a new folder jsrab in the same place.
Open this folder - there should be one folder inside it (Packages)

Copy the content of the Packages folder to the folder
C:\Windows\Temp\CheckSur\Servicing\Packages

Now run the CheckSUR tool again (it may take a while)

Post the new CheckSUR.log file, and the CheckSUR.persist.log file.

Plrase run through the whole SFC /SANNOW procedure again and post the new logs

Great - how is WU working now? - do a Check for updates, and just install the oldest one found.