Unlicensed Product 0xC004F017 in Word, Excel, Visio and Project: Activation Failed
Error 0xC004F017 shows Office as an unlicensed product after activation fails. Assign a valid licence, then reset activation state to clear it.
Office 0xC004C003: Microsoft has blocked this product key permanently
Error 0xC004C003 means Microsoft blocked the Office key, usually a resold or grey-market licence. Here is why it happens and what actually fixes it.