Yea I already read the first tutorial but I can't fix the errors I actually have because one client has over 190 corruptions but all without kb articles.
It seems that dism /online ... tries to fix them from WU but in the end it says that the sources are missing.
An other client got 10 corruptions fixed and is now clean, but the cumulative update from january won't install.
On an other client sfc /scannow and dism /online... cancel the scans.
The problem is that I mostly have to work in the background with psexec or entering an remote powershell session but sfcfix seems that it doesn't support such methods.
I tried my luck if it was written in c# to decompile it but it is written in c or visual c ...