Stop Code Error: 0x80070570-0x2000c while upgarding from 8.1 to 10 1709 A few days ago we had a strong thunderstorm include a strong Lightning hit into the electricity of our building! That ended up for my part in damaging 6 computers, a huge 3kVA UPS, the Cable Modem, the TV Cable Receiver and a few other devices like Microwave and so on! Not funny at all! even for my part, everything had an electric grounding with fast surge protectors, somehow that very strong lightning still was getting into my electricity and damaged quite a bit, luckily no end up in a fire! OK, I'm now on repairing, changing and doing new electricity grounding too. Started today to rebuild the first computer for my home office and got a problem with activation of Windows 10. So, after the auto- and manual-activation were rejected form MS on the new machine, I installed Windows 8.1, activated with my original PKey and started the upgrade to W10 1709, with the result, could not activate!! I got the Stop Code: 0x80070570-0x2000c! Now at this moment I'm on the way to download and install all updates fro W8.1 and will try the activation after done that completely, but think, that Stop Code Error will be back! After reading quite a bit about that stop code, it may seem to be that it comes from a wrong Cluster Size. That will be the next I'll check after the 174 updates left are installed. Not sure that will helps?! Any idea what else could be the problem? Thanks.