and the software, or because the license file is missing/incompatible with your current Windows environment Troubleshooting Guide for Error 18 1. Verify Sentinel RMS Version
: The HostID (locking code) of the machine has changed or does not match the one bound to the license file. Outdated License Manager Sap2000 License Not Recognized Error 18
| Cause | Explanation | |-------|-------------| | | The .lic file (for local licenses) is damaged or has been modified. | | Outdated drivers | Sentinel drivers are old, missing, or corrupted—especially after a Windows update. | | Firewall / antivirus blocking | Security software blocks the communication between SAP2000 and the license server or USB key. | | Multiple license sources | SAP2000 is trying to read from both a network license and a local one simultaneously. | | USB hardware key malfunction | The physical key is failing, improperly seated, or using a faulty USB port. | | Date / time mismatch | System date is incorrect, causing the license’s validity period check to fail. | and the software, or because the license file
: Because licenses are often locked to specific hardware (like Ethernet Address or CPU ID), updating drivers or changing hardware can invalidate the existing license. | | Outdated drivers | Sentinel drivers are
The following diagnostic steps were performed prior to this report:
CSI frequently updates the licensing engine to support new features.