Cannot install Windows 10 Cumulative update KB3194496 for x64

I cannot install Windows 10 Cumulative update KB3194496 for x64

what I have done and found so far:

cleared WU download folder, tried to install the update manually,

Error 0x800F0922 when it tries to install by automatic Windows Update
Error 0x80246010 when I tried to install the .cab file manually with DISM.

It installed fine on 2 other Win10 notebooks. more recently installed, no hyper-v etc.

I know this is currently under investigation by MS but I'm looking for a reason or workaround.

Answer

the workaround could not be simpler:

1. delete folder C:\Windows\System32\Tasks\Microsoft\XblGameSave


2. delete registry key:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\XblGameSave


3. Re-run the update

-> link to the solution