If you have lost or misplaced your product key, you may be able to retrieve it by contacting the software vendor's customer support team.
Want help specific to your situation?
If you have lost your key, contact the vendor immediately. If you are setting up a new system, follow the step-by-step activation guide carefully. And always remember: legitimate keys come from legitimate channels.
Allow the system to deploy the .NET Framework 4.5 and the Crystal Reports Engine .