Using Win8.1 key to activate Win10 is blocked and error 0xC004C003 countermeasures

Many people upgrade Win8.1 system to Win10 system, and Win8.1 key activation can also activate Win10 under normal conditions. However, some users use Win8.1 system key to activate Win10, but the key is blocked, prompting the error 0xC004C003, how to deal with this time?

error 0xC004C003 response

1, with the temporary key download Win8.1 clean installation, enter the system after activation with their genuine key, and then be able to automatically upgrade Win10 Activate

2. Start the installation from the activated Win8.1. Do not select the advanced mode instead of the upgrade.

3. Another method is to reinstall the Win8.1 system. Win8 activation tool to activate and then upgrade Win10 system, or directly download and install the activation-free Win8 system and then upgrade Win10 system.

The above is to use Win8.1 key to activate Win10 is blocked error 0xC004C003, in general, Win8.1 key is blocked, then reinstall Win8.1 key, then activate Win10 is fine.