: Alternatively, creating a file named LSHOST (no extension) with just the server's IP address can help the software point directly to the license source.
If the LED lights up and the error persists, proceed to Fix #2. sap2000 license not recognized error 18 fixed
Licensing software like Sentinel RMS is highly sensitive to system time. Discrepancies can lead to the "not recognized" error. : Alternatively, creating a file named LSHOST (no
SAP2000 reads a text file that tells it where the license is. If this file is missing or points to the wrong location, Error 18 appears. Discrepancies can lead to the "not recognized" error
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: If changes were recently made to the license file, the license manager on the server must be restarted (or "Reread") to recognize the new data. Summary of Component Requirements Software Version Required Sentinel RMS Version SAP2000 v18 and later Sentinel RMS License Manager v8.6 or newer ETABS v17 / SAP2000 v21+ Sentinel RMS License Manager v9.2 or newer