| Step | Action | |------|--------| | 1 | on the server (via Services > CSI License Manager). | | 2 | Verify the license file – Ensure lservrc is in the correct folder (usually C:\Program Files\Common Files\CSI\Licenses\ ). | | 3 | Check network connectivity – From the client PC, ping the license server and telnet to port 27000. | | 4 | Update LMServer – Download the latest License Manager from CSI’s website. | | 5 | Reconfigure license path – In ETABS, go to Help > License > Configure, and specify the correct server or local file. | | 6 | Temporarily disable firewall/antivirus – Test if the error disappears; if so, add an exception for lmgrd.exe and ETABS.exe . |
Before touching any settings, confirm that your license server is actually running.
Did this error occur after a or a hardware change? 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:
To break through Error 120, Leo recalled the standard fixes recommended by Computers and Structures, Inc. (CSI) Reactivate the License : For standalone licenses, the most common fix is to deactivate and then immediately reactivate | Step | Action | |------|--------| | 1
ارور 120 در Etabs | گروه تخصصی نرم افزار JB-Team
Often, restricted user permissions prevent ETABS from accessing the license system. | | 4 | Update LMServer – Download
: Some users running older versions of ETABS (like 2016 or 2018) use tools like RunAsDate to set the system date to an earlier period (e.g., 2018 or 2019) to bypass expiration checks.
Firewalls or antivirus programs are preventing ETABS from reaching the license service. Phase 1: Basic Troubleshooting Steps
The "License Not Recognized Error 120" in ETABS typically occurs when the software cannot communicate with the Sentinel RMS License Manager or find a valid license file. This issue is common after Windows updates, server migrations, or changes to network configurations.
Add the entire Computers and Structures folder path as an exclusion: C:\Program Files\Computers and Structures\