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LDRA Test tools: FlexLM Error -15 Cannot Connect to License Server System

10-Jun-2026

Cause

The license server cannot be found. This can be because the license server machine is offline or disconnected from the network, or the variable used to specify the license server machine is wrong.


Solutions

  • Check that the license server machine can be pinged.
  • Check that the value of the LDRA_LICENSE_FILE environment variable is correct. Try using the IP of the license server machine instead of the hostname.
  • Check that the license server is running.
  • Check the ldra.log on the license server machine to see if the server is running and if there are any errors.
  • Start the License Server if needed.
  • Make sure any ports you have specified are open. 
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