If you are using an older version where the license period has ended, community members frequently use these methods:
As per CSI, the most direct fix for Error 120 is to deactivate the license and then reactivate it . This refreshes the license data stored on your computer and the licensing servers.
command from the Sentinel RMS Utilities folder to reset the license communication. CSI Knowledge Base Further Exploration View the official CSI Knowledge Base for a full table of error codes and specific resolutions. Follow this installation and licensing guide for manual file placement instructions. Check this troubleshooting guide for issues specifically related to Standalone CID keys. Are you using a standalone license with a USB key, or is your license hosted on a company server Licensing errors generated when running CSI software 7 Jul 2025 — etabs license not recognized error 120 work
ETABS uses a file named lslicense.lic to locate the license server. If this file points to a wrong IP address or hostname, Error 120 appears.
of your locking codes from the CSiLicensing folder. If you are using an older version where
Once the prompt reads "Press any key to continue," hit Enter and verify that a valid license file has populated the directory.
Uninstall the existing driver via Control Panel, restart your computer, and run the new installer as an Administrator. 2. Configure Windows Environment Variables CSI Knowledge Base Further Exploration View the official
: The transition from modeling to static and dynamic analysis (including response spectrum and time-history) is remarkably smooth. What Could Be Improved:
: Software from Computers and Structures, Inc. (CSI) can be sensitive to regional settings. Ensure your PC's date and number format US (mm/dd/yyyy) to prevent recognition errors. Verify System Date
How to Fix the ETABS "License Not Recognized" Error #120 The ETABS "License Not Recognized" Error #120 typically occurs when the software is unable to verify your license file, often because it is incomplete, corrupted, or mismatched with your system settings. This error can block you from opening your structural models, but it is usually resolvable through specific reactivation or configuration steps. Primary Cause: Incomplete or Corrupted License