I'm trying to upgrade from a unlicensed windows 7 to a purchased Windows 10 edition. Both are Home Premium editions, in the same language, so I should be able to upgrade without problem.

But n the install, windows 10 is telling me that my license is not correct and therefore, that it cannot continue. So I'm seeking to find a way to either :

  • Buy a cheap Win7 key just so Win10 installer can pursue his work
  • Use any other way to get around this issue so I can finally upgrade.

But in both cases I encounter a problem : I simply cannot use the "Activate Windows" from the control panel : It gives me an error dialog box with the error code


I also cannot start the sppsvc service because it gives me a "System Error 2".I tried multiple repair operations (sppsvc manual repair, WAT update, sfc /scannow, chckdsk) and none of them work.

Google did not help : this error code seems pretty unique, although I don't know why. How can I repair that ?

  • Why not download a Win10 ISO from Microsofts website and install Windows that way? – MJ9 Mar 26 '17 at 11:55
  • You are 100% sure this Windows 10 license was purchased from a legitimate seller? – Ramhound Mar 26 '17 at 17:56
  • @MJ9 That's exactly what I did. – Rackover Mar 27 '17 at 15:34
  • @Ramhound Never did the installation program tell me to enter it anywhere. The problem seems to be with the win7 activation. – Rackover Mar 27 '17 at 15:35
  • I have in the past have used the generic Windows 7 license, in order to get the installation in a state, which could be then used to upgrade to Windows 8 and/or Windows 10. In my specific case, I was attempting to install Windows 8, since I wanted to migrate the system from Windows Vista to Windows 8 and keep installed programs installed. – Ramhound Mar 27 '17 at 16:50

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