Windows 10: Tried almost everything and still can't get Windows 10 to update past error 0x80070003. How?

I've tried just about every solution I could find in posts and still can't get past the Update error code 0x80070003. I even tried to reinstall Windows 10 but the attempt failed, despite successful checks to see if my computer would be able to run Windows 11 and reinstall Windows 10. I think I may need to manually reinstall the missing files but I'm not sure how to do it. I'm running Windows10 Home, version 1809, OS Build 17763.1577It won't even let me get to version 1903. I did a screenshot of the info after the failed reinstall and this is what it said is missing:

:)

 

0x80070003 Error Preventing Windows 10 20H2 from updating

Most of the suggestions you already tried appear to be correct, but not all of them do. For example, the DISM command doesn't (see "Fix 6" in the article below).
[SOLVED] Windows 10 update error 0x80070003 - TechZone Online

 

Error 0x80070003

Hi Nilton,

I suggest you to follow the steps given in the link below and check if it helps you. Select Windows 8.1 from the Product list.

Windows Update error "0x80070002" or "0x80070003"

Fix Windows Update errors - Microsoft Support

Let us know the status of the issue.

 

Error 0x80070003 in Windows Store

Hi everyone, hope this is an appropriate place to post this for help. So I have a Lenovo laptop. I get this error when Windows Store tries to update the Lenovo Settings app (and a few other apps, but not all my apps). This is really annoying as I set a battery charge threshold using the app and I can't change it without accessing the app, and when I click on it, it just flickers and doesn't open. I went through the steps in this article: https://support.microsoft.com/en-us/...-update-errors (which I found via this: https://support.microsoft.com/en-us/...-or-0x80070003), but it didn't solve the problem (please note that I couldn't do step 2 as in the past I've rolled back to a previous version of Windows 10). The last step is to reinstall Windows. Obviously I'm very reluctant to do this as it means I have to copy all of my files and reinstall all my apps, so I was thinking that first, if possible, I should try installing the Anniversary Update. Since I've rolled back from it in the past, can I re-update to it without reinstalling the whole OS (which is what I'm told to do anyway)? If not, I've heard there's a new version of Windows 10 coming in April, so I might just wait for that and see if that fixes it.