This troubleshooting guide addresses the specifically for ETABS 2016. According to official CSI Knowledge Base documentation, Error 30 signifies that a license was found but is considered invalid. 1. Correct System Date and Region Settings
Windows may not know where to look for the license server. license not recognized error 30 etabs 2016 best
If the software was installed correctly but the license expired or became corrupted: license not recognized error 30 etabs 2016 best