Etabs License Not Recognized Error 120 Work Jun 2026
. This error often persists even after updating the license and will cause the program to terminate. Core Solutions for Error #120
If the registry is corrupted, uninstall previous versions (including trials), reboot, and perform a fresh installation.
Find the file named lservrc (it may have no file extension). Rename it to lservrc.old .
Computers and Structures, Inc. (CSI) states that Error #120 triggers when the local license container fails to read the full signature string or matches a mismatched machine lock code. This text generation exception bypasses normal structural limits to provide a comprehensive, technical diagnostic and resolution guide for engineering professionals. Understanding the Root Causes of ETABS Error 120 etabs license not recognized error 120 work
To fix the , you must either reactivate your standalone license or repair a corrupted or missing license file (lservrc) . This error strictly indicates that Computers and Structures, Inc. (CSI) software cannot verify or complete the authorization process. It affects engineering professionals utilizing standalone or network installations of ETABS, SAP2000, and SAFE. Understanding Error 120 in CSI Software
Before diving into solutions, it's crucial to understand what the error code means. According to the official CSI (Computers and Structures, Inc.) knowledge base, Error 120 is defined as follows:
Security software has blocked, quarantined, or modified the license file. How to Fix ETABS Error 120: Step-by-Step Solutions Find the file named lservrc (it may have no file extension)
ارور 120 در Etabs | گروه تخصصی نرم افزار JB-Team
Most of the time, this is a regional format issue. Switch your Windows date/number format to and restart the app. If that fails, deactivate and reactivate your license via the CSiLicensing tool. Official fix info here: CSI Wiki #StructuralEngineering #ETABS #CivilEngineering Licensing errors generated when running CSI software
Go to the ETABS installation folder or find the Sentinel RMS utility folder. Launch WlmAdmin.exe as an administrator. (CSI) states that Error #120 triggers when the
By following the structured steps in this guide, you can confidently resolve the "License Not Recognized" error and get back to your structural analysis and design work with minimal disruption. If all else fails, your final recourse is to contact the official Computers and Structures, Inc. technical support for direct assistance.
You are attempting to use a license file from an older version of ETABS with a newer version (e.g., trying to use an ETABS 2016 license on ETABS v20).