New
#11
I've been using showkey to keep track of what's going on, https://www.tenforums.com/software-ap...7-showkey.html. It gives lots of info on embedded OEM key if there is one, key used to install and current key in use. I did an upgrade to 10074 from Windows 7 via the Insiders page. I got a new key that wasn't listed by Microsoft for that build. That key stayed the same through a couple of upgrades to new builds via Windows update. It changed again at 10130 I think. Then again with 10158, or 10159 or 10162. I didn't check it again until 10162 so I'm not sure what build changed it.. Then again with 10240.