I dont have that piece of paper any more so they said there was nothing they could do for me. When i gave it to them they said it’s an OEM version (it is) and that id need to show them the invoice i got when i payed for it. So they asked me for my Win 7 Pro key, which luckily i still had, on the back of the box it came in. I upgraded from Window 7 Pro to Win 10 Pro during the free upgrade period years ago so i didnt have a product code for Win 10 Pro. Windows is deactivated because I went from Windows 10 Pro to home and it doesn’t match anymore. It’s even gone as far as my digital entitlement is gone from my Microsoft account and I have a Windows 10 home key now. A growing thread on Reddit are complaining that their legitimate Windows 10 Pro installation is suddenly reverting to Windows 10 Home.
