: A discrepancy between the system hardware clock and the verification window embedded within the license string invalidates authentication.
Administrative rights are required for license activation and for the software to read the license file correctly. Right-click the ETABS shortcut and select "Run as 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.
Under , look for a variable named LSFORCEHOST or LSHOST . etabs license not recognized error 120 work
Sometimes an older trial license or an expired lease token creates a collision with your current active license.
Newer ETABS versions often use digital licenses tied to a machine ID.
If you use a USB CID key, ensure the Sentinel System Driver is up to date and recognized in your device manager. : A discrepancy between the system hardware clock
If error 120 persists, you may need to deactivate and reactivate your license:
or higher. Older versions (v8.5 or earlier) will not recognize newer licenses. Check Server Connectivity
It sounds obvious, but check if the license server machine is actually turned on and not in "Sleep" mode. The server must be awake to dispense licenses. If you can tell me the you are using (e
Antivirus or Windows Firewall blocking the license verification processes. Step-by-Step Solutions to Fix Error 120
How to Fix ETABS "License Not Recognized Error #120" Completely