Windows 10: How to fix " Failed to load extension " error message

Hi, I have been receiving Error loading Extension message as below after a system update, Could you please advise how to get it fixed.Failed to load extension from: C:\Users\dan\PCappStore\ui. Manifest file is missing or unreadableMany thanksDan

:)

 

Windows 11 Error Loading Extension failed to load extension from: C:\WINDOWS\system32\tower_main. Manifest is missing or unreadable.

For a few weeks now, I have been receiving this message when I Start my PC which is running Windows 11. Error Loading Extension - Failed to load extension from: C:/WINDOWS\system32\tower_main. Manifest file is missing or unreadable. How do I fix this?

 

User Profile Service Service failed! User profile cannot be loaded.

Brink:
I am using registry editor from command prompt. Drilled down to c:windows\system32\config inside the Load Hive dialog window. Have selected (checked box) the SAM file; clicking on Open opens error message that says:


SAM
This file is in use.
Enter a new name or close the file that's open in another program.

_______

I am at a loss, since I am not running any other program!

Any suggestions?

The SAM file is listed as being 64KB file size.

 

KB4025339 Fails Install 0x80070564

Thanks
I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

At step 2 same troubleshooter error. The KB finished a new download failed to install.
Did step 3 KB has downloaded but fails to install.

If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!