sorry for the late reply, after a week of searching for updates/isos, I was able to replace all the corrupted files.
I tried running sfc /scannow but it fails saying "windows resource could not perform the requested operation". I am now trying to install KB4534310 manually since my test machine cannot be connected to internet.
I seems to be stuck in a loop according to CBS logs but it's still running so I will give it a chance and run it until tomorrow then provide the needed logs.
