For further help, visit the (Article ID: KB-0018-2021) or contact your local software distributor with the error log found in %TEMP%\CSiLicense.log .
To resolve ETABS License Error 18, users can try the following solutions:
Sometimes the client computer is looking at the wrong IP address.
The error may appear in standalone installations, network deployments, or even after following what appears to be a successful software activation process. It represents a failure in the communication chain between the ETABS application and the licensing system that authorizes its use. etabs license error 18 2021
License Error 18 typically indicates that the software cannot find a valid license to run
: For standalone licenses, deactivating and then reactivating the license can fix corrupted license files. Check Port Access : Ensure ports 80 and 443
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Several factors can contribute to the occurrence of the ETABS License Error 18 2021. Some common causes include:
generally translates to a communication breakdown between the ETABS application and the license manager (Sentinel RMS License Manager). In the 2021 build, this error became particularly prevalent due to Windows security updates, firewall changes, and specific bugs in the licensing API that CSI addressed in later patches.
The ETABS License Error 18 2021 is a licensing-related issue that occurs when the software is unable to validate the user's license. The error code 18 indicates that the license server is not responding or is not available. This error can occur due to various reasons, including issues with the license file, network connectivity problems, or configuration errors. It represents a failure in the communication chain
: The most reliable "brute force" fix involves completely uninstalling the software, running a Microsoft FixIt tool to clean registry entries, and then performing a clean install.
CSI licenses starting with . Older versions of the License Manager (v8.5 and earlier) will not recognize these new licenses. If you are running version 8.5 or earlier on your license server, ETABS 2021 will be unable to validate your license, generating a license-not-recognized error.
(example):