Ensure the service is "Running" in the Windows Services menu ( services.msc ).
If you have tried all the above and are still facing Error 120, the issue might be deeper within the Windows registry or a corrupted software installation. etabs license not recognized error 120
If you are using a network license, ensure your is not blocking communication: Add exclusions for ports 80 and 443 in Windows Defender. Ensure the service is "Running" in the Windows
If you are using a network license (where the license sits on a server and not your local machine), Error 120 usually means your computer cannot find the server. etabs license not recognized error 120
and your decimal separator to a period (.) to ensure the license file is read correctly. Check System UUID