The Product Key Is Not Valid Or 0xC004F061 Activation Error On Windows 7 Upgrade
November 3rd, 2009
When installing and upgrading to Windows 7 from previous version of operating system such as Windows XP and Windows Vista with an upgrade license, media (either Windows 7 ISO image or DVD disc) and product key, the following error message may be displayed when entering the serial key during setup:
The product key is not valid. Please retype the product key.
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