The typically occurs when the software cannot verify a valid standalone or network license file, often due to an incomplete license file, expired trial, or system date discrepancies. Common Causes of Error 120
The software's built-in trial period has ended.
Verify your system clock is accurate. If the license was generated for a future date or has already expired, the software will not launch. 3. Update Sentinel Drivers and Locking Codes etabs license not recognized error 120 work
If your computer does not recognize the CID key, download and install the latest driver from the CSI Knowledge Base .
For older versions of ETABS (like 2016) where the license has a fixed expiration, some users use the utility to launch the software with a system date that matches the original license period. The typically occurs when the software cannot verify
Navigate to your ETABS installation directory (usually C:\Program Files\Computers and Structures\ETABS [Version] ) and ensure the lservrc file is present.
Use this utility within the installation folder to view the current license type and its expiration date. If it shows as "expired," you must reactivate your license. 2. Adjust System Date and Format If the license was generated for a future
The lservrc file may be missing or corrupt.