Installation numbers (product number, license number, or key code) required to install QuickBooks or Point of Sale cannot be located or are illegible.
Your installation numbers can be found in one of the following places:
Visit the QuickBooks License Look Up page to retrieve them. If the look up tool cannot find your license number or key code, the web page will display a link for you to contact customer service for further assistance:
Note: In multi-user mode, QuickBooks Pro users must each have their own set of installation numbers. If you purchased a 5-User Value Pack (QuickBooks 2006 and earlier) or a 3-User Value Pack (QuickBooks 2007 and later), each installation must be made using the installation numbers that came with the 5-User Value Pack or 3-User Value Pack, respectively.
If this solution does not resolve the issue, you can read discussions and post messages and questions relating to your issue on the Intuit QuickBooks Community site for free or you can contact a technical support agent for additional guidance. Fees may apply.