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Host id not found in the license file error

- June 11, 2026 at 3:30 am
  
  liang.ge
  Subscriber
  
  Received new license file recently and tried to update it on a previously working server. Got the following error message:
  
  *********************************************************************
  LSTC license server version 77918 started at Wed Jun 3 10:21:30 2026
  *********************************************************************
  Using configuration file /opt/lstc/server_data
  ERROR: the host id(s) of this machine ( 50327FA0 )
  not found in the license file /opt/lstc/server_data
  
  It's confirmed the 50327FA0 id is in the server_data file. I would really appreciate suggestions on how to debug/solve this.
- June 11, 2026 at 3:37 pm
  
  igandiko
  Subscriber
  
  The license key was generated using specific server ids and these ids do not match with the machine where you're trying to install the license. Please regenerate LSTC_SERVER_INFO file on the machine where you want to install the server and send it to your account manager to generate a new license key.
- June 11, 2026 at 7:46 pm
  Waled Raban
  Ansys Employee
  This link will take you to the Installation and Licensing Guide for LS-Dyna.
  - https://lsdyna.ansys.com/
  Once you're there, look for "License HOWTO Documents" for instructions to generate an LSTC_SERVER_INFO file.
  - https://lsdyna.ansys.com/download-install-overview/#section2

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