If you have typed in the license key incorrectly, it will not work.You need a license key for Registry Reviver. All ReviverSoft products are different and require separate purchases and licenses. If you are using the license details from a different product, you will be unable to complete the activation.If you copy a space at the start or end of the license key, it will cause the license key not to work.There are some common reasons why this may happen: