Hello. I am having the same issues with the Windows 10 upgrade as TheDude has previously reported. In fact, last I checked the upgrade had made 30 unsuccessful attempts to upgrade.
I was thinking - and am a non-technically inclined senior citizen - that when I logon to my system I logon on using an @outlook.com address. Could it be that my system is waiting for me to log on to a "local" account or something?
I tried the creation tool... clicked run and "poof," nothing. I even created a USB flash drive with the upgrade on it using our laptop computer. But after the install began I was asked for the "product key;" wouldn't you know that the product key ended in AEOEM (or some such characters), but the upgrade told me it wasn't a valid product key.
So I contacted Dell... so much for paid support; worthless as teets on a boar hog. They referred me to Microsoft, who, after keeping me on hold for some time, had me run MSCONFIG, go to the services tab, check hide all Microsoft services, and then hit apply.... Only problem? The MSCONFIG window said "not responding!"
The Microsoft tech said for $99 she'd be happy to elevate my tech support for one item for 30 days. I said no thanks, that was too much $$$ when they couldn't even guarantee that whatever they might do would correct the issue. (Besides, it seems there are many folks encountering the same issues I am with the upgrade, so this can't be "just" my computer.)
Equipment: Dell XPS 8700, i7 processor, 24Gb RAM, 256Gb SSD