If the file is missing or corrupted, you may need to re-generate it using a valid activation key through the CSI Licensing Portal .
Troubleshooting Guide: Fixing the "License Not Recognized Error 30" in ETABS 2016 license not recognized error 30 etabs 2016
Right-click the clock in your Windows taskbar and select . If the file is missing or corrupted, you
: If using a standalone CID key (USB dongle), ensure the Sentinel System Driver is correctly installed and that the computer recognizes the hardware key. license not recognized error 30 etabs 2016