The most common solution is to replace the lservrc file with a fresh copy from your CSI Customer Portal.

In the world of CSI software licensing, "Error 120" generally refers to a communication failure between the ETABS application and the license manager. The software is trying to "check out" a license, but it cannot locate the valid file or the hardware key required to authorize the session.

Run the deactivation tool to remove the current incomplete license.

If this is your first time running the activation, you may need to first run LicenseRequest.exe from the CSiLicensing folder to generate the necessary machine locking code before using the keygen.

"Error 120: License Not Recognized. The license file is not valid or has been corrupted."

However, this error, while frustrating, is typically not a sign of serious technical failure. In fact, its solution is often straightforward and follows a clear, repeatable procedure. This guide is a comprehensive resource, dedicated to by dissecting its cause and providing a definitive, step-by-step solution.

Change your PC date/number format to . Some users have found that non-US date formats cause the StandaloneKey.exe to fail to recognize valid licenses. 3. Verify Your Computer ID (CID)

Is this happening on a or a network server license ? What version of ETABS are you currently trying to run?

is one of the most frustrating roadblocks for structural engineers using CSI Software (ETABS, SAP2000, SAFE). Unlike generic "license not found" errors, Error 120 specifically indicates a communication breakdown between the ETABS Licensing Service and the Sentinel RMS (License Manager) Server .

Panicked, John called his IT support team, hoping they could resolve the issue quickly. After a series of troubleshooting steps, including checking his license file and verifying his internet connection, the IT team was stumped. They escalated the issue to the ETABS support team, which promised to get back to John within a few hours.

Navigate to the ETABS installation directory (usually C:\Program Files\Computers and Structures\ETABS ). Run the StandaloneKey.exe utility as an Administrator.

If you can tell me the you are using (e.g., v20, v21), I can give you more specific steps to resolve this issue.

On the machine:

Specifically whitelist ETABS.exe , lservnt.exe , and echoid.exe . 5. Check System Time and Network Adapters

No. Error 120 affects all CSI software products that use the same licensing system, including .

Ensure your computer's date, time, and time zone match your network server exactly. A discrepancy of more than a few minutes can invalidate a license state.

If you have followed all the steps above and are still receiving the error, the lservrc file may have been generated incorrectly on the server side, or your Activation Key may be locked. In this case, gather the following: Your License Key.