Understanding the root cause and following a systematic troubleshooting guide can get you back to work in minutes. What Causes Error 120 in ETABS?
If ETABS doesn't know where to look for the license, it will trigger Error 120.
If none of these steps work, it may be time to contact CSI Technical Support with your "echoid.exe" results to verify your license status. To help you resolve this more specifically: Are you using a or network license? Which version of ETABS are you currently running? etabs license not recognized error 120
Error 120 is a communication failure between the ETABS application and the licensing service. The most common culprits include:
Did this error occur after a or a hardware change? Understanding the root cause and following a systematic
The "ETABS License Not Recognized Error 120" is a frequent hurdle for structural engineers using Computers and Structures, Inc. (CSI) software. This error typically surfaces when the Sentinel RMS License Manager cannot validate your credentials, effectively locking you out of your design projects.
Open it with Notepad and ensure it contains only the hostname or IP address of your license server. Save and close. 4. Firewall and Antivirus Exceptions If none of these steps work, it may
: Using an outdated license manager with a newer version of ETABS.
Open , which is the default port used by Sentinel RMS.
📍 : Ensure both ETABS and the Sentinel RMS License Manager are the latest versions provided by CSI.📍 Static IP Addresses : If using a network license, assign a static IP to the server to prevent the LSFORCEHOST path from breaking.📍 Stable Internet : For cloud-based licenses, a flickering connection can trigger Error 120 mid-session.