I would be very surprised if this *works* or *continues to work*.
The non-blockability of updates is a major feature of win10, it is what MS want to impose to dramatically cut down on the problems 'un-updated' PC's cause on the internet & to MS.
This is exactly the part which was 'borked' when Win10 restored a Win 8.1 setup on my sister's PC.
The setting could be listed and changed via the Policy Editor but it was ignored and forced 'Auto Updates' to be the only working option.
Fixed by restoring to Factory Original setup and doing an 'In-Place' update of Win 8 to Win 8.1.
Attempting to update from a Win 8.1 disc failed as the embedded License was not recognized as valid (Original OS was Win 8 and the Key matched).
Best of Luck.