Certain Windows 10 builds (e.g., Build 1803) have known issues with USB key licenses that require the software to be run in Windows 7 or 8 Compatibility Mode . Recommended Solutions
Sometimes Windows security prevents the license manager from reading its own files. Try installing SAP2000 directly on the if you previously installed it on a secondary drive. Right-click the SAP2000 shortcut and select Run as Administrator CSI Knowledge Base If none of these steps resolve the issue, the file itself may be corrupted, and you should contact CSI Support to request a license reactivation. CSI Knowledge Base to request a new license from CSI? I recieve the following error SentinelLM: Error[18] sap2000 license not recognized error 18 extra quality