I have tried dism, sfc scans to no avail. Cumulative updates have been failing since january. I tracked the update (KB4530689) related to the corruptions by looking at the registry (components hive). From what I understand, you can get the manifests/payload in their respective KB by extracting them. Sadly, I cannot download this particular KB in Microsoft's catalog site.
I'd like to avoid reinstalling ang migrating stuff as much as possible. any ideas?