Do I need my Windows 7 license key to do a Windows 8 upgrade?

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I don’t have my Windows 7 license key. I upgraded to the Windows 8 preview and now I am having problems with my computer because it says my preview expired and it keeps shutting it off.

I see you can buy a Windows 8 upgrade for $40. But someone told me I’ll need my Windows 7 license. Is this true, or can I just put the upgrade on and have it work?


When you use an upgrade version of Windows, you need to have a valid licence for a previous, eligible version of Windows. That licence is not freed up for use on another computer after the upgrade.

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