Hi Tim,

There are some common reasons why this activation issue might happen and I have listed them below:

1. If you copy a space at the start or end of the license code, it will cause the license code not to work.
2. If you are using the license details from a different product, you will be unable to complete the activation. All ReviverSoft products are different and require separate purchases and licenses. You need a license code for your purchased product only.
3. If you have typed in the license code incorrectly, it will not work. In order to avoid this, you should copy the complete license code from your purchase confirmation email and then paste it directly into the activation window.
4. Do ensure that your internet connection is working correctly and that you have checked your firewall settings. You can either temporarily disable your firewall or add an exception for the Reviversoft product.
5. Do a check of your computer’s date and time. An incorrect date might cause the reviversoft server system to think that your license code has already expired.

Please cross check if you are not having registration issue due to the above mentioned reasons.

Also, I want to tell you that the Licence key for PC Reviver would not work if you have used it on any other PC previously. As you are saying you have reinstalled your machine and thus it might happen that it is being counted as more than a single time.

If this is the case, then I would advise you to send an email to support@reviversoft.com stating that you are getting this message "Licence being already used on a different PC, so it is invalid".

An executive will surely help you out. Also, include your account details in the mail so that its easy to track your details at the earliest.

Thanks,
Lokesh