Let me know how it goes. I read online the same thing you just said, so you're probably right. My understanding was the official upgrade tools didn't run gatherosstate.exe anymore to create the token used by Windows 10 to activate a Windows 7-updated machine.I've definitely used it more recently than that. If it's activated, it'll stay activated. I'm running it on a Windows 7 unit I had sitting at the office now just to test.