To resolve the "License not recognized" (Error 30) in ETABS 2016, follow these troubleshooting steps based on CSi America's official documentation 1. Verify System Date and Time Error 30 typically indicates that the license is not valid , often caused by a discrepancy in your system's date. CSI Knowledge Base
For network license users, the machine cannot connect to the server, or the license server is not running. license not recognized error 30 etabs 2016 new