It depends on your NBN connection ( or maybe the speed that the Microsoft site is downloading). Mine took about 6-8 hours to download on my computer and my wife's which is on our wifi network.
This was after several months of failure because "some files not available".
I then replaced the hard disk and did a system image and then ran the Microsoft online file correction program.
Finally success and I have to admit the system runs much quicker but that could be the new hard disk.
Regards Philip A
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