The plot just keeps getting THICKER and THICKER with this problem! I feel I'm wading into deep water and am up to my neck-- ready to "go under" at any moment. But I'm still floating and searching!
Hoping you did your "backup of important files! You mentioned boxing day, so I'm thinking you are from Canada?? I'm assuming you are working with a DESKTOP? Since it's a "built" computer, that model number doesn't help me much. I also have a no-name built box, running windows 10 HOME.
I see in your screenshot most everything says: Issue not present. It's just that one bugger regarding the restart! I don't know why it says: Detected and then completed right underneath. Clueless on that one! eh, I'm clueless on lots of things quite obviously! As I've said before, I'm also trying to learn as I go along. Sorry you are a guinea pig in this.
As far as the "administrator" question. How many users and/or accounts are on your computer? You can find this info in control panel under USERS. Let's say there are two users: "Louie" and "Dewey" -- Depending upon how you created the profiles --One should show 'Local Account' (password protected) - or - ' Local Account Administrator' (password protected.) IF there is just ONE account it is most likely and should be an Administrator account. I have two profiles set up (for MYSELF). One I created as an Admin Account and the other a Local Account (for my own protection.) I use my Local Account 90% of the time. You will need to run the Admin account to make any major changes to your computer. This article, although a few years old, gives a good brief overview. -- Worth a read:
https://www.maketecheasier.com/why-you-shouldnt-use-admin-account/
The first paragraph: "Just about everyone uses an administrator account for the primary computer account. But there are security risks associated with that. If a malicious program or attackers are able to get control of your user account, they can do a lot more damage with an administrator account than with a standard account. You can protect yourself by using a standard account as your primary account and then temporarily elevating permissions when you need to make administrator changes."
You mentioned "deleting apps" that you recently downloaded.. I hope you mean you will UNINSTALL the apps through the control panel, not just delete them! I'm also hoping the apps were from a reputable site. I would first update your antivirus and do a scan. You can also get the free version of malwarebytes and run a scan from that too. You can UNINSTALL malwarebytes after that as well as your free anti-virus program and try to update windows again. If that doesn't help, install your anti-virus program again.
One last thing I'm curious about: could you do the following and show the windows updates that come up. Click on:
If after this you are ready, willing and able to try to update to 20H2 using the update assistant, that would be another option for you.
That process has a list of prerequisites to do before beginning it, so I'd hold off even if you find the page and are tempted to go for it.
Also: I don't use chrome so I can't answer that question. Perhaps SOMEONE may be able to tell you.
Perhaps another SOMEONE also has an answer to this continuing saga. If only!! Let's try to hang in there Louie and find a solution.
Have a good night.