i was hoping to upgrade from webiste rather than download a complete setup. as i will have to buy a windows 10 key, whereas i already have a key for windows 8.
it states on the weblink you provided :-
"You can use the package to install Windows 10 on the current PC, if it's running Windows 7 or 8.1"
as stated before, i have to upgrade to windows 8.1 from windows 8 in order to use the creation tool from microsoft. however because of the missing files, i cannot upgrade to windows 8.1
If you have never had Windows 10 then the free window to install has passed and you do not have a key.
only solution is to buy a copy of Windows 10 to obtain the key.