The Product Key Is Not Valid Or 0xC004F061 Activation Error On Windows 7 Upgrade
Posted by Bitventure
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Thursday, November 5, 2009
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Windows7,
Windows7 Tips en Tricks
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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.
Hack to In-Place “Downgrade” from Windows 7 Ultimate or Professional to Less Premium Editions
Windows 7 does not allow users to “downgrade” or convert from a more premium and more expensive edition to down-level, more basic and less expensive edition. For example, it’s impossible to downgrade from Windows 7 Ultimate to Windows 7 Professional or Enterprise, or from Windows 7 Professional to Windows 7 Home Premium or Home Basic.