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ETABS License Not Recognized Error 120: A Comprehensive Review and Solution
You are not alone. This is one of the most common issues users face with CSI software (ETABS, SAP2000, SAFE, and CSiBridge). Whether you are using a hardware key (dongle) or a network license, this guide will walk you through exactly why this happens and how to fix it so you can get back to "work." etabs license not recognized error 120 work
C:\Program Files (x86)\Common Files\SafeNet Sentinel\Sentinel RMS License Manager\ or the folder where your IT team installed the license manager.C:\ProgramData\Computers and Structures\ETABS vXX\ (ProgramData is hidden; type it manually in File Explorer).The Error.LOG or LicenseError.LOG file found in the CSiLicensing folder. ETABS License Not Recognized Error 120: A Comprehensive
For persistent issues, you may need to run lsdecode.exe to view the exact expiration date and license type to ensure the trial hasn't simply expired. exe to verify your specific machine's locking code? Go to Control Panel → Network Connections Disable
: On the server, ensure the "Sentinel RMS License Manager" service is running. Restarting this service can often resolve temporary communication blocks. Firewall/Antivirus
When you launch ETABS, the software sends a "handshake" request to the license manager on port 1947 (default for Sentinel RMS). Error 120 appears when:
The "License Not Recognized" error with code 120 typically occurs when ETABS is unable to validate the license. The error message may appear as:
Our app is suitable for building and construction or renovation professionals. Whether you are a project manager, builder, architect, quantity surveyor, foreman, mason, plasterer, cleaner, tiler, painter, in the construction industry or roofer.
You can save your measurements file on your smartphone or share it to your computer. The format of this file is free and you can then access your measurements and quantities with any spreadsheet or text editor.
We do not use your personal data without your knowledge. We also do not use your GPS location and we do not transfer any data from your smartphone to any server.
To have your measurements and your quantities, you don’t need to connect online, you have everything you need on your smartphone or on your computer. If you have no or not enough network, you will still be able to work on your plans without any problems.
While it may seem trivial, this app can give you a big hand!
It is very useful and convenient to calculate the quantity, the menu is very easy to use, there are no more length calculations, I recommend it to my fellow civil engineers.

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If you don’t have any network or not enough network, the app has no problem and you can still work on your plans.
We do not use your personal data without your knowledge. We do not use your GPS location and we do not transfer any data from your mobile to any server.
You can consult the page dedicated to our privacy policy and management of your personal data here..
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