Etabs License Not Recognized Error 120 Jun 2026

Reboot your machine to clear the temporary system registry cache.

C:\Program Files\Computers and Structures\ETABS [Version Number]\ Inner Text Layout Syntax:

Check your ETABS installation folder for a file named lservrc . It should not have a file extension (like .txt ).

If your company shares ETABS seats across a server pool via a concurrent token network, the client machine cannot read the server's tracking file. 1. Upgrade the Sentinel RMS License Manager etabs license not recognized error 120

Often, restricted user permissions prevent ETABS from accessing the license system.

A firewall might be blocking the port used by Sentinel RMS (default port is ). Open Command Prompt ( cmd ) and type: ping [Your_Server_IP]

If the license is already active, choose to , then Reactivate it using your original activation key. 3. Verify the lservrc File Reboot your machine to clear the temporary system

Firewalls often block the communication port used by CSI software.

If you use a standalone license tied directly to your machine, the issue usually lies within the local lservrc text file. 1. Re-generate the License File Using Leveler

Click and wait for the confirmation window. If your company shares ETABS seats across a

Add an exception for the Sentinel RMS License Manager executable ( lservnt.exe ).

The lservrc file has become unreadable or damaged.

The lservrc file, which contains the authorization codes, may be missing critical components or failed to write correctly during activation.

Should we look up the specific path details for (e.g., v19, v20, or v21)?