Okay, let me tell you a story.
I replaced my 500GB 840 EVO this evening with a 1TB 850 EVO and did a clean install. Now, this is my primary desktop, which had been running 8.1 with Media Center, so when it upgraded to 10 in July it activated as Windows 10 Pro. And when I did a clean install back in July, it still activated as Windows 10 Pro.
So I swap out the SSDs and do a clean install using the new Media Creation Tool. Installs in about 10 minutes. Windows boots up and I check activation and it’s activated… as Windows 10 Home. Seriously??? All I did was swap out the SSD. The motherboard, CPU, RAM, GPU, everything else is the same.
I manage to get a support agent in a browser chat and explain the situation. So, like, remember back in the day when all you had to do was call the 800 number and rattle off some numbers. Hahahahahahahahaha
Oh, man, so the support agent is like, okay, do you still have your Windows 8.1 Pro key? (I did, and gave it). They then asked for permission to remote access my computer, so I’m like really? But I say yes because I might as well see what happens.
They send me a URL for the remote access client, I run it, and type in the code I’m given. The agent connects and is controlling my computer (there have been several times where they ask for permission and inform me they’re not going to look at any of my files, and they suggest that I pay attention to the screen to make sure nothing untoward happens).
So the agent does something with the command line and I get that CALL THE 800 NUMBER utility for activating Windows, except I don’t need to call because the agent is just looking at the installation ID.
After a minute they inform me that everything checks out and that they’re going to update my system from Home to Pro using a new Windows 10 key. They type some more stuff in command line and basically launch the built-in upgrade tool and type in a new key, my computer installs the upgrade and restarts, and I’m at Windows 10 Pro. And the remote access session relaunches and the agent is like letting me know I’ve got Windows 10 Pro. I get a new key that I’m told to save.
The entire process took like 20 minutes.
I mention that I plan on upgrading another computer with a new SSD and whether I have to do this all over again, and they said if I have to validate a Windows 7/8 key, then yes.
Hmmmmm