To view your current license type and expiration date to ensure it hasn't expired.
If the above steps do not resolve the issue, try:
The or LicenseError.LOG file found in the CSiLicensing folder.
If the error persists due to corrupted registry entries, use the "Repair" option in the installer or perform a clean reinstall. 5. Using "Run As Date" (Workaround for Legacy Versions)
Just when John was about to give up hope, the ETABS support team called him back. After some investigation, they discovered that the issue was caused by a conflict with another software that John had recently installed on his computer. The ETABS license server was not able to communicate with the software, resulting in the error.
Troubleshooting ETABS Error #120: License Not Recognized
If the registry is corrupted, uninstall previous versions (including trials), reboot, and perform a fresh installation.