Ensure you have the "Full Install" package if you are starting from scratch. If you already have CR 2013 installed, you only need the "Support Pack" update.

If you only need to view and interact with reports (rather than design them), SAP offers a for free. This does not require a product key and allows you to open .rpt files. Installation Tips for SP12

🛠️ Counterfeit keys prevent you from accessing official SAP patches, security updates, and technical support. How to Access Crystal Reports 2013 Legally

SAP Crystal Reports is a proprietary commercial product. It is not open-source or freeware. To use the software legally, a valid license key is required.