If you install the windows update KB9059915 and it fails it might be the case that your program files are not on the C: drive. To solve this problem, change the location of the program files temporarily on the drive C:, install the updates and then change the location of your program files back to your old location.
You can change the program files location by using some tweak program like the Tweak-ui from Microsoft or changing the value of a registry, like in the following example:
Windows Registry Editor Version 5.00
"CommonFilesDir"="c:\\Program Files\\Common Files"