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windows 8.1 key doesn't work with 10 you only need to upgrade for the first time from windows update then 10 will be activated
windows 8.1 key doesn't work with 10 you only need to upgrade for the first time from windows update then 10 will be activated
It did for me.
You can use this to find your key if you want to double check it:
ProduKey - Recover lost product key (CD-Key) of Windows/MS-Office/SQL Server
I did the download (Windows 10) to a USB - then booted using the USB drive. I was then asked to install, not upgrade. A window popped up asking for my key. I typed it in & it said it wasn't a valid key. What now? I'm upgrading from Win7 64 to Win10 64