This article describes an error code 0xC004C003
This article describes an error code 0xC004C003
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This article describes an error code 0xC004C003. There are cases which have been discussed related to product activation and licensing related issues due to the hardware changes. If more no of activation are being done using the same product key, it may cause windows product activation issues.
Applicable to the following Operating systems:-
Another code explained along with this above error code is 0xC004B008. If the activation server denies the activation code entered, this could result in the above error code 0xC004C003. Common issues related to activation are an unauthorized key entry.
Basic troubleshooting start with the checking of system date and time. There could be network challenges due to Intermittent connectivity issues. If the time zone is set incorrectly, the system cannot be recognized by Microsoft servers. Make it your local time zone from where you are trying to activate Office or Windows.
In other words, the activation keys are blocked, try to take the assistance of a technician here. So that we can track the product keys on Microsoft Product code activation pages to verify the validity.