. Ensure you have the latest drivers installed to properly recognize hardware lock codes. Refresh the License File Locate the file in the ETABS installation folder (typically in the subfolder). If the file is corrupt or missing, you may need to deactivate and reactivate your license using the CSiLicensing tool. Check Environmental Variables

For official technical support or detailed troubleshooting, you can refer to the CSI Knowledge Base

: In Windows settings, change your PC date and number format to "English (United States)" (

: If your computer cannot communicate with the license server, create a file named LMHOST.INI