@Edwin, did you do this now, today?
The same happened to me yesterday (2 rigs) !I performed a clean install of Build 10240 skipping both of these steps, then after I signed in with my MS Account as an insider, the copy was activated.
I wonder if that would still happen today?
Originally I had fresh installed the first b9841 iso from scratch, and sucessive upgrading with 5 newer iso versions since then, just installing latest b10240 the day before, always mounting the iso each time, and always doing an upgrade (not that it matters but always deleting that 15GB WindowsOld folder in C:\ the upgrade creates, just to save space) and so today after reading the latest posts here I was curious myself if and how mine was still activated.
I do not have an insider 'or any' MS account to sign in to, and never did, and so I've never used any of that feature. I just get my info from this forum.
Anyway, because of the posts here about activation, being curious I just ran slmgr /xpr to check mine - and it says permanent activation <shrug>
Hope this carries over to the RTM
Last edited by endeavor; 18 Jul 2015 at 10:58.