Originally Posted by
Lil-Diabo
I've been having a bit of a nightmare myself.
Admittedly my Windows 7 Pro is OEM, I did a clean install of 7 with all the updates (SP1 and everything else) - activated fine/all genuine (Double checked on Microsoft website) but no Windows 10 update in the taskbar.
Went onto the Microsoft website (Wish I could find it again) and basically forced the update to happen with some tool
A while later i had windows 10 but activation failed no matter what I did with no visible error code - I'm assuming it's because of my OEM license or the fact I forced windows 10 to update without having the notification - I don't know
I did a clean install overnight and left it updating and will try again later today.
Have a couple of links and scripts to try if I don't have more luck