If you get error message from Windows Update : ”We couldn’t update system reserved partition” in a new window then:
* Search for cmd. Press-and-hold or right-click on Command Prompt in the results, and select Run as administrator.
* At the command prompt, type mountvol y: /s and then hit Enter. This will add the Y: drive letter to access the System Partition.
* Switch to the Y drive by typing Y: and press Enter.
* Then, navigate to the Fonts folder by typing cd EFI\Microsoft\Boot\Fonts.
* Once there, type del *.* to delete font files. The system may ask you if you are sure to continue, press Y and then Enter to continue.
Now, restart update procedure and it will be OK.
* Search for cmd. Press-and-hold or right-click on Command Prompt in the results, and select Run as administrator.
* At the command prompt, type mountvol y: /s and then hit Enter. This will add the Y: drive letter to access the System Partition.
* Switch to the Y drive by typing Y: and press Enter.
* Then, navigate to the Fonts folder by typing cd EFI\Microsoft\Boot\Fonts.
* Once there, type del *.* to delete font files. The system may ask you if you are sure to continue, press Y and then Enter to continue.
Now, restart update procedure and it will be OK.