Why Can't Windows On My Laptop Be Updated Anymore, And Can I Rectify The Situation?

I have a 3-1/2-year-old HP Pavilion laptop ("2022 model", according to the vender). It has a Celeron N4120 CPU and 16 GB of RAM, and it's running Windows 11 Home (x64).

For the past year or so, Windows can no longer be updated. It goes through the motions for about 45 minutes, and then it says "undoing changes".

What's going on? Does this mean that Windows already considers my computer "obselete", and no longer supports it?

 

Try running WhyNot11 - https://www.majorgeeks.com/files/details/whynotwin11.html
If you don't meet requirements try - https://www.majorgeeks.com/files/details/flyby11.html

 

Are you using Windows update or the Windows installation media?
If WU then download the Windows 11 .iso, right click to mount & choose setup, ensure keep everything/keep personal apps & files is selected & continue with the installation.
If this still fails:
Please try these cmds:
Right click on start & choose powershell/terminal with admin & type/copy & paste these cmds one at a time then click Enter:

Code:

SFC /SCANNOW
DISM /Online /Cleanup-Image /StartComponentCleanup 
DISM /Online /Cleanup-Image /RestoreHealth
SFC /SCANNOW

Yes the Sfc cmd is run twice.