Etabs License Not Recognized Error 120 -

Reinstall ETABS as an (right-click the installer > Run as Administrator).

Are you using a license or a network/server license? What version of ETABS are you currently running?

: Aggressive real-time security scans quarantining or selectively blocking lservrc or local locking code files ( wechoid.exe ).

: Sometimes, the PC's regional settings clash with the license server. Setting the date/number format to US (mm/dd/yyyy) can resolve recognition issues when running tools like Standalonekey.exe Native Image Cleanup etabs license not recognized error 120

The "Error 120" is a licensing error that can appear not only in ETABS but also in other CSI software products like SAP2000, SAFE, CSiBridge, and Perform3D. According to the official CSI Knowledge Base, the problem description for Error 120 is concise: . For standalone license users, the official resolution is to deactivate and then reactivate the license .

Error 120 is a common yet frustrating licensing issue that occurs when ETABS (or CSI Software) cannot communicate with the license server or local license file. It typically appears during software startup, blocking access to the program. While the error message is vague, it usually points to one of three root causes: network/server communication failure, outdated license manager tools, or corrupted license path settings.

| 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 . | Reinstall ETABS as an (right-click the installer >

Don't panic. In 90% of cases, Error 120 is not a license revocation but a network or configuration issue. This comprehensive guide will walk you through what Error 120 means, why it happens, and—most importantly—how to fix it permanently.

Knowing these details will allow me to provide the exact file paths or registry keys you need.

Are you using a or network (server) license? What version of ETABS are you running? According to the official CSI Knowledge Base, the

| Pros | Cons | |------|------| | Network licenses allow flexible sharing across a team. | Error 120 is cryptic and requires admin-level troubleshooting. | | Standalone (USB) option available for frequent travelers. | License Manager tools feel outdated (based on FlexNet). | | | No clear error log explaining which feature is unrecognized. |

: Disagreements between your motherboard's BIOS clock and the internal expiration timestamps embedded within the license strings.

The client computer cannot reach the license server due to network downtime or disconnection.

Imagine a lead engineer, Sarah, finishing a complex high-rise model late on a Friday. She hits "Run Analysis," but instead of seeing deflection maps, she’s met with a cold dialogue box: License Not Recognized - Error #120 .