Hi Greg,
OK, here how I worked through it........
- I was able to start ClipSVC without a problem, so I skipped these steps.
- a) Cannot open Store, so can't get in to update apps
I have Windows Version 19044.1706, Experience Pack 120.2212.4170.0
b) I set Date/Time to set time zone automatically. I had done this before, but the option seems to get unchecked by itself.
c) When doing the first part, I did Option 1 by mistake. The two screenshots below are from that. I got about 100+ responses like this from PowerShell:

Then, when I ran the reinstallation part, the first 40 or so seemed to work, but from there to the end (100+) got messages similar to this:

Then I proceeded with Option 2. Everything else but Photos and Store seemed to work, so I ran those using CMD as Admin:

d) I opened Services and both Windows Update Service and Background Intelligent Transfer Service were already stopped.
Deleted the contents of C:\Windows\SoftwareDistribution\
Restarted above services successfully.
e) There was no "All Troubleshooters" option, but I ran the Windows Store apps Troubleshooter. There was no "Photos" present.
Clicked Next and got this:

f) Ran WSreset and got this. The white box went away as soon as I captured the screenshot:

- Went to Apps, but Microsoft Store is not present; couldn't take any action:

g) Ran PowerShell:


Followed instructions on https://store.rg-adguard.net/
Had trouble with this one:
Microsoft.WindowsStore_12107.1001.15.0_neutral___8wekyb3d8bbwe.AppxBundle

Tried this one (again, after many times previously -- didn't work):
https://answers.microsoft.com/en-us/windows/forum/all/how-to-reinstall-microsoft-store-app-in-windows-10/e9d71c80-8399-49d5-9d92-a18add81a4dc
Ran the XBOX installer, but got this:

Followed the instructions on GitHub:
https://github.com/kkkgo/LTSC-Add-MicrosoftStore

g) Could not clear the LocalCache Folder:
Folder not found:

h) Checked services:

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I read through the remaining links and instructions. Much of it is repetition of other previously mentioned links and instructions, so I just can't repeat everything....again. I ran sfc /scannow and got:

and then DISM:

I disabled most of the items in the msconfig / Startup, as you suggested. Still no Microsoft Store, unfortunately.......
The link I provided you was a download link to an .appx to the same site you downloaded the store from. Try making a new user and see if there is a Windows Store. If there is, then move all your data to the new account. Give it admin permissions as well, of course.
Also, when you tried installing it with the Windows software it gave another error, it seems it is because of a Windows Update. Try updating to the latest version
You didn't download the archive! Don't run that command, download the archive, extract it in a folder **the path should have not a space** and run Add-Store.cmd and send a screenshot.