If you're having Issues activating windows ? Here are a list of errors & troubleshooting steps you can do to resolve WINDOWS 7 activation issues:
Activation Error 0xC004C003
This error is displayed as follows:
The activation server determined that the specific product key is in use: 0xC004C003
This error is typically related to re-using a key that has already been used to activate Windows. Check the key to be sure you are using the correct key. If you are, it would be best to start with Windows Activation support for assistance
Activation Error 0xC004E003
This error is displayed as follows:
The following failure occurred while trying to use the product key:
The Software Licensing Service reported that the license evaluation failed: 0xC004E003
Troubleshooting for this issue is provided in the following Knowledge Base article:
950755 Error message when you try to activate a copy of Windows Vista: “The Software Licensing Service reported that the license evaluation failed: 0xC004E003″
Activation Error 0xC004F050
This error is displayed as follows:
The following failure occurred while trying to use the product key:
0xC004F050
The Software Licensing Service reported that the product key is invalid
Troubleshooting for this issue is provided in the following Knowledge Base article:
950756 Error message when you try to activate a copy of Windows Vista by using the Windows Activation wizard: “The Software Licensing Service reported that the product key is invalid: 0xC004F050″
This issue may also be resolved using the standard troubleshooting steps provided above, as the cause for the key error could be damaged software licensing files.
Activation Error 0xC004F061
This error is displayed as follows:
The following failure occurred while trying to use the product key:
0xC004F061
The Software Licensing Service determined that this specified product key can only be used for upgrading, not for clean installations.
This error is encountered when you perform a clean installation of Windows without entering a product key, and then provide a Retail Upgrade key during the Activation wizard.
If everything else fails and you stuck, Its about time to call Microsoft.
Check out your Microsoft support numbers
here
*ps - All windows updates Issues are free of charge, so call them !! lol