: This file contains your license string. If it is corrupted or contains old data, the software won't recognize the new license.

You must contact CSI (Computers and Structures) support for a hardware replacement. There is no software fix for a burned-out dongle.

This guide provides a deep dive into why Error 30 occurs in ETABS 2016, step-by-step diagnostic procedures, and the to eliminate the error permanently.

Troubleshooting ETABS 2016: Fixing "License Not Recognized" (Error 30) Encountering Error 30: License found but license is not valid