CSC Orion 18 reached its official on December 31, 2018. Because the software is no longer developed or supported by Trimble (which acquired CSC), obtaining a new product activation key is no longer possible through traditional official channels.
Synchronizing with older versions of Autodesk Revit and Tekla Structures. Moving Forward: Modern Alternatives csc orion 18 product activation key
Bottom line: If your budget cannot accommodate the license fee, consider open-source alternatives like or Blue Cherry (low-cost commercial) rather than pirating CSC Orion 18. End of Life (EOL) CSC Orion 18 reached