OK, looks like some corrupt xml files. Please do the following so I can validate which ones.
Step#1 - Capture Process Monitor Trace
1. Download and run
Process Monitor. Leave this running while you perform the next steps.
2. Select the
Options....
Enable Boot Logging option. A Enable Boot Logging dialog will come up. Just click OK.
3. Create a folder on your desktop named
BootLog.
4. Attempt to install
KB4056898 just like you have in the past. Let the machine reboot and revert just like it has in the past.
5. After the machine has rebooted and come back up to the desktop, open
Process Monitor again. A message box will come up telling you that a log of boot-time activity was created and ask if you wish to save it. Click
Yes and save to the BootLog folder on your desktop.
6. This may take some time as it converts the boot-time data. Allow it to finish.
7. Zip up the entire BootLog folder on your desktop and upload to
SendSpace and provide a link for me to download.
8. Also zip and upload your entire CBS folder.
Thank you.